Land off Thieves Lane For Croudace Homes Transport Assessment March 2013

Document History

JOB NUMBER: 334/2013

DOCUMENT REF: Transport Assessment

REVISIONS: Draft 2 For Submission

Revision Comments By Checked Authorised Date

Draft 1 For team comment PE SA PE 12/03/2013

Draft 2 For submission PE SA PE 26/03/2013

Contents

1 Introduction 1

2 Pre-application Consultation, HCC Highways 2

3 Policy Review 4 Introduction 4 National Planning Policy Framework 4 East Herts Local Plan (EHLP) 5 Hertford and Ware Urban Transport Plan 7 Summary 10

4 The Existing Site Function and Base Line Conditions 11 Introduction 11 Site Location 11 Existing Site Transport Conditions 11 Local Travel Characteristics 11 Road Traffic Accidents 12 Summary 12

5 Local Facilities and Public Transport 13 Rail 13 Buses 13 Summary 14

6 Proposed Site Layout and Function 15 Proposed Car and Cycle Parking 15 Refuse and Servicing Arrangements 15 Summary 15

7 Traffic Modelling Rationale and Results 16 Local Cordon Survey 16 Census (Work Place Destination) 16 Traffic Surveys 16 Assignment Model 17 Trip Rates 17 TRICS 17 Future Year Assessment 17 ARCADY Model A414/Thieves Lane Roundabout 17 ARCADY Model Thieves Lane/Welwyn Road Roundabout 19 Summary 20

8 Summary and Conclusion 21 Conclusion 22

Appendices 23

Appendix: A Site Location Plan A-1 Appendix: B HCC Meeting Note and Correspondence B-2 Appendix: C Local Facilities Plan C-3 Appendix: D Five year accident data D-4 Appendix: E Bus Routes E-5 Appendix: F Potential Access Options F-6 Appendix: G Census (work place destination) G-7 Appendix: H Traffic Survey Data H-8 Appendix: I Assignment Model I-9 Appendix: J TRICS data J-10 Appendix: K Arcady results K-11

1 Introduction

1.1 EAS Transport Planning has been commissioned by Croudace Homes to prepare a Transport Assessment (TA) for a proposed future development off Thieves Lane in Hertford, East Herts District, on Greenfield Land.

1.2 The site is bordered by Welwyn Road to the north, Thieves Lane to the east and farmland and woodland to the west and south. The site is an urban extension and the east and northern boundaries are established urban areas forming the Sele Farm ward. A location plan forms Appendix A.

1.3 For transport review purposes this TA is based on a proposed development of 280 houses with parking allocation in accordance with the district policy. The site will comprise of a mix of 2 to 4 bedroom houses although the final content is still to emerge.

1.4 Discussions have been held with County Council (HCC) as highway authority following a considerable amount of background surveying and modelling work of local junction capacity. Hertfordshire have stated that they would not object to this development proposal. Appendix B contains a meeting note in email form together with other discussion related emails. This document contains all the discussions with HCC and the additional requirements of HCC following the discussions.

1.5 This TA has been prepared with regard to the DfT Guidance on Transport Assessments (March 2007).

1.6 The contents of this TA based on the agreed scope are:

• Section 2 – sets out the pre-application discussion with HCC • Section 3 – sets out the policy context; • Section 4 – describes the existing site function and sets out the baseline conditions; • Section 5 – is a review of facilities near to the site and describes the available public transport. • Section 6 – describes the site access, potential layout and function. • Section 7 - describes the existing and expected transport impacts due to the development trips; and the detailed analysis of modelling undertaken at the nearby junctions as well as the surveys undertaken. • Section 8 – summarises and concludes this report.

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2 Pre-application Consultation, HCC Highways

2.1 As described above EAS completed a range of surveys and modelling and discussed this at a meeting with officers of HCC in January 2013. The full set of email records form Appendix B. The email note of the meeting setting out the additional discussion is included below for ease of reading;

“Thanks you for your time last Tuesday when we met at County Hall to discuss the proposed residential development off Thieves Lane in Hertford for circa 280 units with Croudace Homes

I understand that you will be happy to see a draft of a TA in due course in advance of any application so that we can discuss any issues and work together on this project.

With respect to the work we have done so far your colleague will be reviewing the modeling but generally you are content with the approach we have taken and the trip rate of circa 0.6 we have used rather than the lower one observed at Turpins Close. You would like us to undertake a sensitivity test of assignment based on the 2011 Census (work location) when this is available I( I believe soon) and compare this to the findings of our site observations.

We will of course issue all the modeling as part of our TA including the PM ARCADY tests for the A414 junction and both AM and PM for the Welwyn Road junction.

We discussed the approach to access and agreed that this can all be solved in due course and that one or two access points may be appropriate for the site but that it could operate with one access, in which case an emergency access would be required. Access layouts should meet the MfS standards of visibility and consider the position of existing junctions. You described HCC approach that they now adopt the main routes only and any short cul- de-sacs generally are not adopted.

We discussed any traffic schemes or developments that we should consider as part of the assessment but you confirmed that there were none in proximity which would impact upon our work.

We will of course include the relevant Local and National Policy within our document to ensure that we comply on transport grounds and you suggested we review the Hertford and Ware Urban Transport Plan as well.

You discussed the HCC relationship with Croudace which is good and that you would require a planning obligation for transport so that benefits can be made strategically.

I believe you asked that we review accident patterns at the A414 roundabout just to the west of the rail- bridge, we will be reviewing accident patterns as part of our TA and so will extend to this junction as well.

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This is all I can recall, so please add if there is anything else. Overall a positive meeting and I believe you confirmed you would not have an objection on highway grounds as things currently stand.

I would be grateful if you would confirm this is a correct interpretation of our meeting as soon as possible and please feel free to call with any questions/clarifications.”

2.2 HCC subsequently confirmed the above meeting note.

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3 Policy Review

Introduction

3.1 This section reviews the latest relevant policy documents both Nationally and Locally

National Planning Policy Framework

3.2 Paragraph 14 of the NPPF states:

“At the heart of the National Planning Policy Framework is a presumption in favour of sustainable development , which should be seen as a golden thread running through both plan-making and decision- taking.”

3.3 Paragraph 17 of the National Planning Policy Framework (NPPF) sets out 12 core planning principles including core principle 11 which states that planning should:

“actively manage patterns of growth to make the fullest possible use of public transport, walking and cycling, and focus significant development in locations which are or can be made sustainable.”

3.4 Section 4 of the NPPF on transport includes advice on Transport Assessments at paragraph 32:

“All developments that generate significant amounts of movement should be supported by a Transport Statement or Transport Assessment. Plans and decisions should take account of whether:

● the opportunities for sustainable transport modes have been taken up depending on the nature and location of the site, to reduce the need for major transport infrastructure;

● safe and suitable access to the site can be achieved for all people; and

● improvements can be undertaken within the transport network that cost effectively limit the significant impacts of the development. Development should only be prevented or refused on transport grounds where the residual cumulative impacts of development are severe”

3.5 Paragraphs 35 and 36 of the NPPF discusses locating development and use of Travel Plans respectively:

“Plans should protect and exploit opportunities for the use of sustainable transport modes for the movement of goods or people. Therefore, developments should be located and designed where practical to

● accommodate the efficient delivery of goods and supplies;

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● give priority to pedestrian and cycle movements, and have access to high quality public transport facilities;

● create safe and secure layouts which minimise conflicts between traffic and cyclists or pedestrians, avoiding street clutter and where appropriate establishing home zones;

● incorporate facilities for charging plug-in and other ultra-low emission vehicles; and

● consider the needs of people with disabilities by all modes of transport.

A key tool to facilitate this will be a Travel Plan. All developments which generate significant amounts of movement should be required to provide a Travel Plan.

3.6 Paragraph39 discusses parking policy:

If setting local parking standards for residential and non-residential development, local planning authorities should take into account:

● the accessibility of the development;

● the type, mix and use of development;

● the availability of and opportunities for public transport;

● local car ownership levels; and

● an overall need to reduce the use of high-emission vehicles.”

East Herts Local Plan (EHLP)

3.7 The Secretary of state confirmed on 22nd March 2010 a range of saved policies from the 2007 EHLP. Relevant policy extracts are set out below in italics , responses are in plain text;

TR1 Traffic Reduction in New Developments

Developments generating additional traffic will be required to incorporate measures, commensurate with the scale of additional traffic generated, to ensure that alternative transport options to the private motor vehicle are available to the users of the site. Such measures may include:

(a) the extension and improvement of pedestrian links;

(b) cycle paths and facilities;

(c) improvements to the passenger transport network which should include bus and/or rail facilities, either directly to the site or in close proximity to it (i.e. within 400 metres maximum walk distance), and

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may involve an extension to existing infrastructure (e.g. additional cycle paths, bus shelters) and/or enhancements to the existing bus network;

(d) the provision of moorings alongside navigable waterways (as appropriate); to be achieved via the imposition of conditions and the use of planning obligations (or as subsequently revised) as appropriate to the individual characteristics of the site.

3.8 The development proposes extensions to footways at the site boundary and refuges to access facilities. Internally the layout design has yet to be agreed, but the site will be laid out to benefit alternative transport modes as far as practicably possible.

TR3 Transport Assessments

Developments that are likely to generate significant movement and travel demand will require the submission of a Transport Assessment to accompany the planning application, which should meet the criteria contained in Hertfordshire County Council’s Roads in Hertfordshire – Design Guide, 2001 (or as subsequently superseded, by the local highway authority)

3.9 Hence the production of this document.

TR7 Car Parking – Standards

Car parking provision for new development proposals will be assessed in accordance with the District Council’s car parking standards (which should be taken as maximum standards), including coach, cycle and powered two-wheeler provision, as set out at Appendix II. The actual provision made will be determined on a site-specific basis having regard to the proposed use, location, and availability of, or potential for access to, modes of transport other than the private car in accordance with the Council’s SPD ‘Vehicle Parking Provision at New Development’.

3.10 Parking on site will be policy compliant.

TR12 Cycle Routes – New Developments

Where possible, the design of new developments will be required to include coherent, safe, convenient, direct, comfortable, attractive routes and facilities for cyclists and pedestrians. Where practicable opportunities exist or can be created, access routes into and through the site for cyclists and pedestrians should be formed separate from roads, particularly if this would create an advantage over motorised transport in the distance and time needed to travel to local facilities and services and/or improve the wider cycle network. Where appropriate, developer contributions (or as subsequently revised) will be expected to improve pedestrian and cycle routes associated with the use of the site.

3.11 Internally the layout design has yet to be agreed, but the site will be laid out to benefit alternative transport modes as far as practicably possible.

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TR14 Cycling – Facilities Provision (Residential)

Applications for new residential developments should, where appropriate, demonstrate provision of sufficient cycle storage facilities for occupants of new dwellings to enable cycle usage to become a realistic option to the use of private motorized transport. Such facilities should include appropriate secure, covered, waterproof storage facilities and be provided either within the curtilage of the dwelling or, for example, in the case of flats, within a communal area, provided that such facilities are easily observed and accessible.

3.12 Secure covered cycle storage will be incorporated into the development.

TR18 Home Zones

The implementation of Home Zones, involving appropriate speed limits and traffic calming measures to ensure priority is given to the use of residential streets for the benefit of pedestrians, cyclists and local residents, will be supported provided that they are of good quality design and consistent with and/or enhance the character, landscape, and residential amenity of the area.

3.13 The development will be design to MfS standards which incorporates ‘Home Zone’ themes.

Hertford and Ware Urban Transport Plan

3.14 At the request of HCC the Hertford and Ware Transport Plan has been reviewed. Appropriate elements are contained below. Extracts from the transport plan are in italics, responses are in plain text.

4.4.1 The County Council’s vision for Hertfordshire’s transport over the next twenty years is ‘to provide a safe, efficient and affordable transport system that allows access for all to everyday facilities. Everyone will have the opportunity and information to choose the most appropriate form of transport and time of travel. By making best use of the existing network we will work towards a transport system that balances economic prosperity with personal health and environmental well being.’

3.15 This is the basis of all transport policy which all development must consider.

4.4.2 The LTP has nine objectives set out under the government’s shared priorities of safety, congestion, accessibility, air quality and quality of life. The objectives, listed under the shared priorities, include:

Safety

– To improve safety for all by giving the highest priority to minimising the number of collisions and injuries occurring as a result of the transport system.

3.16 All access points will be designed to meet appropriate standards, there are opportunities (described later)

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to improve crossing of roads for pedestrians.

Congestion

– To obtain the best use of the existing network through effective design, maintenance and management.

– To manage the growth of transport and travel volumes across the county, and thereby secure improvements in the predictability of travel time.

– To develop an efficient, safe, affordable and enhanced transport system which is attractive, reliable, integrated and makes best use of resources.

3.17 As will be seen later existing travel patterns exist which combat congestion near to the site via peak spreading. Any additional traffic from the site is shown to be imperceptible amongst the back ground traffic.

Accessibility

– To develop a transport system that provides access to employment, shopping,education, leisure and health facilities for all, including those without a car and those with impaired mobility.

– To ensure that the transport system contributes towards improving the efficiency of commerce and industry and the provision of sustainable economic development in appropriate locations.

3.18 The location of the site has been shown to be accessible being located adjacent to many bus routes and close to three schools, a local shopping area and within walking distance to Hertford North Station and Town Centre.

Quality of Life

– To raise awareness and encourage use of more sustainable modes of transport through effective promotion, publicity, information and education.

– To reduce the need for the movement of people and goods through integrated land use planning.

3.19 The location of the site would allow integration to existing infrastructure, services and education and employment. All units would have secure cycle parking. A travel plan is not required as clarified in policy TR4 of the EHLP.

Bus Strategy

4.4.8 The bus strategy’s objectives contribute to the overall LTP shared priorities of safety, congestion management, accessibility and quality of life by:

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_ Providing an effective and efficient network of bus services as a travel mode which passengers will choose to use;

_ Reviewing the network with others to ensure resources are used to best effect;

_ Improving bus punctuality through commercial partnerships and better management of the highway network;

_ Developing accessibility to employment, shopping, education, leisure and health facilities by effective design of the bus network, the use of less conventional approaches and securing maximum external funding;

_ Continuing to improve vehicle quality and associated infrastructure at bus stops and interchanges to increase access to the network by those with impaired mobility; and

_ Raising awareness and encouraging the use of bus services through improved information, marketing and branding.

3.20 The location of the development site adjacent to many bus routes will increase the use of these routes and therefore their viability.

Cycling Strategy

4.4.10 The Cycling Strategy documents mentions that Hertfordshire has the lowest levels of cycling to work in the East of England region. The primary purpose of the cycling strategy is “to encourage more people to cycle more often, and involve and support other stakeholders in doing the same.”

3.21 All units will have secure cycle parking.

Road Safety Plan

4.4.15 The Road Safety Plan is to deliver the LTP objective of improving safety for all by giving the highest priority to minimising the number of collisions and injuries occurring as a result of the transport network. It is to deliver Hertfordshire’s casualty reduction targets:

to reduce the number of people killed or seriously injured in road collisions to no more than 600 by 2010; to reduce the number of children killed or seriously injured in road collisions to no more than 56 by 2010; and no increase in slight casualties (5,509).

4.4.16 It should be noted that the safety targets (KSI and slight) have their own ranking system. Any scheme the UTP may develop will only have safety as a secondary target and a UTP scheme cannot be funded by a safety-related target.

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3.22 A review of personal injury road accidents close to the site has been undertaken, it is shown that the level of accidents in the vicinity of the site is low.

A414

5.2.1 Key congestion hotspots in Hertford are cited as being mainly on the A414 on its route through the town and at its connection with the A10. The Bluecoats and Mill Road junctions are often identified as areas causing the most significant delays to traffic, both in the morning and evening peak periods. Congestion also occurs frequently at the Castle Street junction with Parliament Square and at the junction of Hale Road with Pegs Lane (County Hall and Wallfields roundabout). The proximity of the M25 to the study area also can lead to these problems being exacerbated when disruption occurs on the motorway network.

3.23 This matter was considered at the outset. It was shown that the level of peak hour trip rates from the site is low and traffic assigned away from the A414 (Hertford). Nevertheless this matter has been discussed with HCC as the development could not solve A414 issues which would need a strategic solution. Contributions will be sought from the developer towards other transport improvements to support alternative travel options.

Summary

3.24 Numerous transport policies have been considered both nationally and locally. It is clear that the site will be fully policy compliant.

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4 The Existing Site Function and Base Line Conditions

Introduction

4.1 This section describes the existing site function and the existing (baseline) travel characteristics of the area local to the proposed development site.

Site Location

4.2 A plan of the proposed development site in relation to local centres and key facilities is shown in Appendix C.

4.3 The site is located in the Sele Farm ward off Thieves Lane which forms a junction with the A414 approximately 300m south of the site and the Welwyn Road B1000 at the sites north east boundary. The A414 is primary route through Hertfordshire linking to the Essex border and beyond to the east and Hemel Hempstead to the west. More locally it also links the north south routes of the A10 and A1. The A10 being approximately 3 miles east of the site and the A1 approximately 5 miles west of the site.

4.4 The A414 is therefore of significant strategic importance and this matter was of high consideration throughout the study.

Existing Site Transport Conditions

4.5 Whilst the site is currently green field land, it is close to the A414. The A414 is a busy dual carriageway for most of its length in the vicinity of the site although a bottle neck occurs to the east of the Thieves Lane/A414 roundabout where it passes under a rail bridge and then continues into the Hertford central area. As the A414 passes Hertford centre there are a number of roundabouts (some part time signalized) and pedestrian crossing opportunities. As a result this section of the A414, within the Hertford central area, is congested locally.

Local Travel Characteristics

4.6 To inform the modeling it was considered prudent to determine the peak hour trip rate for existing residences off Thieves Lane and for this purpose EAS undertook a cordon count of Turpins Close between 07.30 and 09.30 on a neutral weekday. At the same time EAS also completed a distribution survey to determine vehicle assignment from Turpins Close. We expected that there would be peak spreading from these developments in order to avoid the morning periods of congestion on the A414 and also that the assignment would generally avoid the A414 into Hertford.

4.7 The results of the survey concurred with the expectations, the peak hour two way trip rate was 0.39 and only 12% of traffic departing from the development in the peak period headed towards Hertford on the

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A414.

Road Traffic Accidents

4.8 Road Traffic Accident data has been obtained from HCC for the five year period ending November 2012.

4.9 No accidents have occurred with the limits of the site boundary. Two slight accidents have occurred to the east on Thieves Lane and one slight accident has occurred to the north on Welwyn Road. Eight slight accidents have occurred at the A414/Thieves Lane roundabout.

4.10 At the request of HCC we have also obtained data for the A414/Campfield Road Roundabout located just to the west of the rail bridge. Two slight accidents have occurred at this roundabout.

4.11 No serious of fatal accidents have occurred in the study area. This is a very good accident record. The accident data is included at Appendix D.

Summary

4.12 The site is located within a residential area but forming a greenfield extension to the Sele Farm ward.

4.13 The existing traffic conditions immediately surrounding the site are generally light. However the A414 is located to the south of the site which is a busy dual carriageway for most of its length; a bottle neck occurs to the east of the Thieves Lane/A414 roundabout junction causing congestion passing the Hertford Town Centre area.

4.14 Survey results indicate that local residents avoid using the A414 towards Hertford in the peak periods. This is typical of travel patterns in urban areas where there is peak spreading.

4.15 There have only been slight traffic accidents occurring in the most recent five year period in the study area and these are low in number.

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5 Local Facilities and Public Transport

5.1 The plan attached at Appendix C, illustrates the local facilities with indicative pedestrian walk isochrones and local public transport links. The site is very well located for accessing facilities by foot or cycle, including retail, education, health, leisure, and employment.

5.2 Two primary schools and secondary school as well as local shops, a pub and bus stops, are all located within a 400m walk of the site.

5.3 The local shops consist of;

• Co-op food store • Fish and chips • Pharmacy; • Bakers • Hairdressers • Butchers • Betting Shop

5.4 Hertford North Station is an approximate 900m walk from the site, which is located off North Road. At this point North Road has marked cycle lanes and the Station has good levels of secure covered cycle parking.

5.5 The whole of Hertford Town Centre with all amenities is within a 2km walk of the site. 2km is recognized as a walkable distance.

Rail

5.6 As set out above Hertford North Station is located within 900m of the site but in addition Hertford East Station is just outside of the Town Centre.

5.7 Hertford North has services to London Kings Cross and Moorgate as well as in a northbound direction. Services to London are generally every 20minutes with an hourly northbound service to Stevenage.

5.8 Hertford East is at the end of the line for the Hertford Branch of the West Anglia Service; running south to London Liverpool Street. Connections can be made at Broxbourne to travel northwards to Cambridge. Two services per hour run from Hertford East Station.

Buses

5.9 The closest bus stops to the site are located on Thieves Lane at the site boundary. Two services pass

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the site boundary, the 388 and the H3. The 388 runs between Hertford and Welwyn bus station and the H3 to Hertford North Station. Just to the north east of the site, within 100m of the boundary, a range of additional services can be picked up. These run to various destinations including and Heathrow; Hertford East and North Bus Stations, Broxbourne and Train Stations.

5.10 The bus services local to the site are shown on the plan at Appendix E. It is clear that the site is very well located to public transport services.

Summary

5.11 The site is located at the edge of an existing residential urban area and therefore benefits from the existing urban facilities and infrastructure but will also add to the local economy and the viability of these existing facilities.

5.12 The site is in walking distance of the Hertford North Rail Station, Hertford Town Centre and bus services pass the site frontage. A range of everyday requirements including schools are also very local to the site. The site is therefore in a very sustainable development location.

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6 Proposed Site Layout and Function

6.1 The development site will contain approximately 280 residential homes of between 2 and 4 bedrooms although the final content is to be determined.

6.2 The internal layout is also to be determined although it is possible that a link between Thieves Lane and Welwyn Road will be formed. The site has generous frontage which can accommodate full visibility splays. Appendix F contains a drawing which provides a potential option for access points and includes pedestrian refuge options within Thieves Lane and Welwyn Road.

Proposed Car and Cycle Parking

6.3 Parking would be incorporated into the development in accordance with East Herts District Parking Policy.

Refuse and Servicing Arrangements

6.4 Refuse facilities will be accessible to each unit. The layout would be designed to accommodate the refuse collection requirements for East Herts District Council.

Summary

6.5 The internal layout has yet to be determined but it will be constructed to adoptable standards and with the ethos of the ‘Manual for Streets’ which is adopted as a design guide for Hertfordshire.

6.6 There are many access options available, all will have appropriate visibility splays and access geometry.

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7 Traffic Modelling Rationale and Results

Local Cordon Survey

7.1 EAS undertook a cordon count of Turpins Close between 07.30 and 09.30 on a neutral weekday. At the same time EAS also completed a survey to determine vehicle route choice (assignment). It was expected that there would be peak spreading from the development in order to avoid the worst periods of congestion on the A414 and also that the assignment would generally avoid the A414 into Hertford.

7.2 The results concur with the expectations, the peak hour two way trip rate was recorded as 0.39 and only 12% of traffic departing from the development in the peak period headed towards Hertford on the A414 (eastbound).

Census (Work Place Destination)

7.3 At the request of HCC we have undertaken a review of the 2011 census to determine ‘work place’ destination from the local area. The results of the data are included at Appendix G. What needs to be kept in mind is that the census does not tell you;

• the time of the journey, i.e how the journey fits around the peak hour, • that work place journeys only make up about 30% of all peak hour journeys, • the route choice.

7.4 The work place locations are also broken down by mode of travel and from this it is likely that 55% would need to travel east on the A414. The assignment taken to reach the A414 is not possible to determine, but based on experience and observations it is highly likely that in the most congested periods most people would choose to travel via Welwyn Road (east) and join the A414 at the North Road roundabout. This route is generally less congested and has a dedicated left turn slip onto the A414 (east) avoiding the bottleneck formed by the upstream rail bridge.

7.5 The lack of route choice (assignment) data in the census means that the overall journey to work data adds no evidence to lend or remove support for the actual route choice observed in the Cordon Survey.

Traffic Surveys

7.6 Traffic surveys were obtained from HCC for the Thieves Lane/Welwyn Road Roundabout. These were recorded in May 2011.

7.7 A full classified turning count and queue length survey was commissioned for the A414/Thieves Lane Roundabout, this was competed on 4 th December 2012.

7.8 Both sets of traffic survey data are enclosed as Appendix H.

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Assignment Model

7.9 Assignment has been prepared based on the actual turning movements at this junction and the two way movements of Thieves Lane and Welwyn Road rather than the observed assignment from the cordon survey. The full assignment model was completed using EXCEL. The assignment model information is contained in Appendix I.

Trip Rates

7.10 The observed two-way Trip Rate from Turpins Close was 0.39. Turpins Close contains of the order of 50 houses and so is a suitable proxy for the future development site. However, for the purposes of being robust a 50% higher trip rate than the that observed was used i.e a two way trip rate of 0.6.

7.11 This was agreed as appropriate at the pre-application meeting with HCC. As such no further trip rates have been calculated, but generally a trip rate of 0.6 for a home county site in a sustainable location is robust.

TRICS

7.12 To validate the observed trip rates from Turpins Close and prove the robustness of using a 0.6 trip rate, a TRICS assessment has been undertaken. The TRICS assessment included 43 sites ranging from 9 to 372 units throughout England. 19 of the sites were ‘sub-urban’ and 19 ‘edge of town’. 3 were ‘edge of town centre’ and 2 were ‘neighbourhood centre’.

7.13 The results gave an AM two way peak hour vehicle trip rate of 0.566 and a PM two way peak hour vehicle trip rate of 0.609. As a result the use of a two way trip rate of 0.6 following observations of 0.39, is considered appropriate and robust.

7.14 Full TRICS trip rate information is contained at Appendix J.

Future Year Assessment

7.15 No future year assessment has been completed. HCC confirmed (in the meeting note) there were no other development sites that needed to be considered within the assessment. Since the commencement of the recession there has been stagnated traffic growth, therefore for the foreseeable future and for a site where peak spreading is occurring due to congestion, allowing for a future year assessment is not necessary.

ARCADY Model A414/Thieves Lane Roundabout

7.16 Arcady models for both the AM and PM peak hours for the A414/Hertingfordbury Road/Thieves Lane roundabouts have been prepared.

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7.17 Full classified turning data for the A414 R/B was collected on a neutral weekday together with a queue length survey of all arms. Prior to this the junction was visited on three occasions in the AM peak specifically to observe the traffic.

7.18 The A414/Thieves Lane junction was observed to work very well and queues are minimal. EAS has modelled the existing operation of the junction using ARCADY for both the AM and PM periods. The results closely replicate the existing traffic conditions.

7.19 The likely development generated traffic was then added based on actual turning movements at this junction rather than the observed assignment from the cordon survey and also using a 50% higher trip rate than the that observed from the cordon survey for reasons of being robust.

7.20 Consideration was given as how to best model the A414 roundabout as it was clear that the flows into the roundabout from Hertford are regularised by the signals upstream and the bottle neck caused by the rail bridge just east of Campfield Road. Thus the flows onto the roundabout are remarkably similar in each quarter of an hour period. EAS therefore built the model using the ‘Direct Input’ and actual HGV options rather than the more simple OD TAB and default HGV options.

7.21 The results of the ‘existing’ and ‘with development’ ARCADY models for the AM period are as follows;

EXISTING AM ARCADY RESULTS OF THE A414/THIEVES LANE

Max RFC Max Queue

Arm A Hertingfordbury Road 0.243 0.3

Arm B A414 West 0.389 0.6

Arm C Thieves Lane 0.76 3

Arm D A414 West 0.951 12.6

AM ARCADY RESULTS A414/THIEVES LANE ‘WITH DEVELOPMENT’

Max RFC Max Queue

Arm A Hertingfordbury Road 0.255 0.4

Arm B A414 West 0.392 0.6

Arm C Thieves Lane 0.793 3.5

Arm D A414 West 0.966 13.7

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Table 7.1 Existing and ‘with development’ traffic flows AM PEAK; A414/Thieves Lane Roundabout

7.22 for the PM period are as follows;

EXISTING PM ARCADY RESULTS OF THE A414/THIEVES LANE

Max RFC Max Queue

Arm A Hertingfordbury Road 0.200 0.2

Arm B A414 West 0.635 1.7

Arm C Thieves Lane 0.253 0.3

Arm D A414 West 0.682 2.1

PM ARCADY RESULTS A414/THIEVES LANE ‘WITH DEVELOPMENT’

Max RFC Max Queue

Arm A Hertingfordbury Road 0.208 0.3

Arm B A414 West 0.649 1.8

Arm C Thieves Lane 0.269 0.4

Arm D A414 West 0.695 2.2

Table 7.2 Existing and ‘with development’ traffic flows PM PEAK; A414/Thieves Lane Roundabout

7.23 As can be seen there is a negligible increase in RFC and Queues ‘with development’ over the existing situation in both the AM and PM peak periods.

ARCADY Model Thieves Lane/Welwyn Road Roundabout

7.24 The same exercise has been undertaken for the Welwyn Road junction. In this instance traffic flow data was obtained from HCC. The count was undertaken in May 2011 and is therefore recent enough to be valid.

7.25 The roundabout works well within capacity and continues to do so following the addition of the development flows.

7.26 The results of this ARCADY assessment for both junctions are enclosed at Appendix K.

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Summary

7.27 Considerable attention has been given to prepare an accurate model of the junctions closest to the site including the Thieves Lane/ Welwyn Road and Thieves Lane/A414 roundabout junctions. It is clear that the models replicate very well the existing traffic conditions and the robust assessment prepared confirms that the traffic generated by the development will be imperceptible.

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8 Summary and Conclusion

8.1 For transport review purposes this TA is based on a proposed development of 280 houses with parking spaces that will be policy compliant. It is a greenfield site but adjacent to an established residential area forming the Sele Farm ward.

8.2 Considerable pre-application discussion has taken place with Hertfordshire County Council as Highway Authority and HCC have confirmed that they would have no objection to this application on Highways Grounds.

8.3 The site is located at the edge of an existing residential urban area and therefore benefits from the existing urban facilities and infrastructure but will also add to the local economy and the viability of these existing facilities.

8.4 The site is in walking distance of the Hertford North Rail Station, Hertford Town Centre and bus services pass the site frontage. A range of everyday requirements including schools are also very local to the site. The site is therefore in a very sustainable development location.

8.5 The existing traffic conditions immediately surrounding the site are generally light, however the A414 is located to the south of the site which is a busy dual carriageway for most of its length; a bottle neck occurs to the east of the Thieves Lane/A414 roundabout junction causing congestion within the Hertford Town Centre area

8.6 Survey results indicate that local residents avoid using the A414 towards Hertford in the peak periods and the peak hour trip rates are low. This is typical of travel patterns in urban areas and is indicative of peak spreading.

8.7 There have only been slight traffic accidents occurring in the most recent five year period in the study area and these are considered low in number.

8.8 The internal layout has yet to be determined but it will be constructed to adoptable standards and with the ethos of the ‘Manual for Streets’ which is adopted as a design guide for Hertfordshire.

8.9 There are many access options available, all will have appropriate visibility splays and access geometry.

8.10 Considerable attention has been given to prepare an accurate model of the junctions closest to the site including the Thieves Lane/ Welwyn Road and Thieves Lane/A414 roundabout junctions. It is clear that the models replicate very well the existing traffic conditions and the robust assessment prepared confirms that the traffic generated by the development will be imperceptible.

Page 21

Conclusion

8.11 Transport Policy relevant in East Herts and nationally has been considered. Traffic generated by the development will be imperceptible. The site is in a sustainable location and will add to the viability of local services and infrastructure.

8.12 The site provides a highly policy compliant and sustainable residential development opportunity in transport terms.

Page 22

Appendices

Appendix: A Site Location Plan

Appendix: B HCC Meeting Note and Correspondence

Appendix: C Local Facilities Plan

Appendix: D Five year accident data

Appendix: E Bus Routes

Appendix: F Potential Access Options

Appendix: G Census (work place destination)

Appendix: H Traffic Survey Data

Appendix: I Assignment Model

Appendix: J TRICS data

Appendix: K Arcady results

Page 23

Appendix: A SITE LOCATION PLAN

Page A-1

2.0km

1.0km

The Site *Town Centre

Land at Thieves Lane, Hertford 3

Appendix: B HCC MEETING NOTE AND CORRESPONDENCE

Page B-2

Patrick Eggenton

From: Vetti Vettivelu [[email protected]] Sent: 18 February 2013 11:47 To: Patrick Eggenton; Paul Chappell; Dan Tan Cc: Ben Yallop Subject: RE: Proposed Development off Thieves Lane Hertford

Patrick

I am happy with what you have set out in the notes below. To be a complete TA please provide A414 Arcady for both AM and PM peaks

Regards

Vetti

From: Patrick Eggenton [ mailto:[email protected] ] Sent: 16 February 2013 09:31 To: Vetti Vettivelu; Paul Chappell; Dan Tan Cc: Ben Yallop Subject: RE: Proposed Development off Thieves Lane Hertford

Hi Vetti and all,

I would be grateful if you could get back to me regarding the email/meeting note below.

I am aware that Croudace Homes would appreciate this which will give them confidence to move on and tackle other planning issues.

Kind Regards

Patrick Eggenton

EAS Unit 108 The Maltings Stanstead Abbotts Herts SG12 8HG t 01920 871777 m 07709 694819 www.eastp.co.uk

From: Patrick Eggenton Sent: 11 February 2013 12:44 To: 'Vetti Vettivelu'; '[email protected]'; '[email protected]' Cc: 'Ben Yallop' Subject: Proposed Development off Thieves Lane Hertford

Dear Vetti, Paul and Dan,

Thanks you for your time last Tuesday when we met at County Hall to discuss the proposed residential development off Thieves Lane in Hertford for circa 280 units with Ben Yallop of Croudace Homes

1 I understand that you will be happy to see a draft of a TA in due course in advance of any application so that we can discuss any issues and work together on this project.

With respect to the work we have done so far your colleague Dan will be reviewing the modeling but generally you are content with the approach we have taken and the trip rate of circa 0.6 we have used rather than the lower one observed at Turpins Close. You would like us to undertake a sensitivity test of assignment based on the 2011 Census (work location) when this is available I( I believe soon) and compare this to the findings of our site observations.

We will of course issue all the modeling as part of our TA including the PM ARCADY tests for the A414 junction and both AM and PM for the Welwyn Road junction.

We discussed the approach to access and agreed that this can all be solved in due course and that one or two access points may be appropriate for the site but that it could operate with one access, in which case and emergency access would be required. Access layouts should meet the MfS standards of visibility and consider the position of existing junctions. You described HCC approach that they now adopt the main routes only and any short cul- de-sacs generally are not adopted.

We discussed any traffic schemes or developments that we should consider as part of the assessment but you confirmed that there were none in proximity which would impact upon our work.

We will of course include the relevant Local and National Policy within our document to ensure that we comply on transport grounds and you suggested we review the Hertford and Ware Urban Transport Plan as well.

You discussed the HCC relationship with Croudace which is good and that you would require a planning obligation for transport so that benefits can be made strategically.

I believe you asked that we review accident patterns at the A414 roundabout just to the west of the rail-bridge, we will be reviewing accident patterns as part of our TA and so will extent to this junction as well.

This is all I can recall, so please add if there is anything else. Overall a positive meeting and I believe you confirmed you would not have an objection on highway grounds as things currently stand.

I would be grateful if you would confirm this is a correct interpretation of our meeting as soon as possible and please feel free to call with any questions/clarifications.

Kind Regards,

Patrick Eggenton

EAS Unit 108 The Maltings Stanstead Abbotts Herts SG12 8HG t 01920 871777 m 07709 694819 www.eastp.co.uk

****Disclaimer****

The information in this message should be regarded as confidential and is intended for the addressee only unless explicitly stated. If you have received this message in error it must be deleted and the sender notified. The views expressed in this message are personal and not necessarily those of Hertfordshire County Council unless explicitly stated. Please be aware that emails sent to or received from Hertfordshire County Council may be intercepted and read by the council. Interception will only occur to ensure compliance with council policies or procedures or regulatory obligations, to prevent or deter crime, or for the purposes of essential maintenance or support of the email system. 2 Patrick Eggenton

From: Patrick Eggenton Sent: 19 December 2012 16:52 To: '[email protected]' Subject: Proposed Development, Land at Thieves Lane Hertford Attachments: EXISTING A414 RB AM PEAK WITH DEV 121212.pdf; EXISTING A414 RB AM PEAK 121212.pdf; 1369 Hertfordshire.xlsm; Location and Facilities Plan pe Layout1 (1).pdf

Matthew,

As discussed just now, EAS has been appointed to prepare a Transport Assessment for a proposed development off Thieves Lane at the west side of Hertford, (please see location plan attached). The development is likely to be formed of 250 to 300 residential units and have two access points, one off Thieves Lane and one off Welwyn Road. The detail of the access points has yet to be resolved but in principal there is space under the developers control/Highway Land to implement priority junctions.

We have already undertaken some traffic assessment work to prove the viability of the development with mind to the conditions of the A414 as it passes through Hertford. We decided it would be prudent to determine the peak hour trip rate for existing residences off Thieves Lane and to this end we undertook a cordon count of Turpins Close between 07.30 and 09.30 on a neutral weekday. At the same time we also completed a distribution survey to determine vehicle assignment. We expected that there would be peak spreading from these developments in order to avoid the worst periods of congestion on the A414 and also that the assignment would generally avoid the A414 into Hertford.

The results thoroughly concur with our expectations, the peak hour two way trip rate was 0.39 and only 12% of traffic departing from the development in the peak period headed towards Hertford on the A414.

We have prepared a full Arcady for both the AM and PM peak hours for the A414/Hertingfordbury Road/Theives Lane R/b and the Thieves Lane/Welwyn Road R/B.

Full classified turning data for the A414 R/B was recently collected on a neutral weekday together with a queue length survey of all arms. Prior to this the junction was visited on three occasions in the AM peak specifically to observe the traffic. In fact this junction works very well and queues are minimal. We have modeled the junction using ARCADY and our ‘existing traffic’ ARCADY output (EXISTING A414 RB AM PEAK 121212.pdf) exactly replicates the existing traffic conditions. We then added development traffic based on actual turning movements at this junction rather than the observed assignment from the cordon survey and also using a 50% higher trip rate than the that observed from the cordon survey for reasons of being robust. The results of the ‘existing’ and ‘with development’ models are as follows;

EXISTING MAX RFC MAX Q Hertinfordbury Arm A Road 0.243 0.3 Arm B A414 west 0.389 0.6 Arm C Thieves Lane 0.76 3 Arm D A414 west 0.951 12.6

EXISTING WITH DEVELOPMENT MAX RFC MAX Q Hertinfordbury Arm A Road 0.255 0.4 Arm B A414 west 0.392 0.6 1 Arm C Thieves Lane 0.793 3.5 Arm D A414 west 0.966 13.7

As can be seen there is a negligible increase in RFC and Queues with the ‘with development’ over the existing situation.

We have undertaken the same exercise for the Welwyn Road junction and this continues to operate well within capacity and I have not attached the results here just to keep the size of this email down.

We spent some time considering how to model the A414 roundabout as it was clear that the flows into the roundabout from Hertford are regularised by the signals upstream. Thus the flows onto the roundabout are remarkably similar in each quarter of an hour period. We therefore built the model using the ‘Direct Input’ and actual HGV options rather than the more simple OD TAB and default HGV option.

I have attached the results of the AM ARCADY Models and the classified traffic flow turning count data for your perusal.

It is now my intention to comprehensively prepare the Transport Assessment document and so I would be grateful for your views on the work we have so far completed and also an indication of any committed development in the area which we should assess together with any committed highway improvement schemes.

If there are any specific matters that you would like to see addressed in the TA please let me know, I would like to open up some regular dialogue with you as I am sure that new development in Hertford of this order will cause some concern and I would not want it to come as a surprise for any parties involved.

Please confirm that you have received this email and please contact me should you have any questions, I look forward to hearing from you shortly. Please note that we are based in Stanstead Abbotts so it would be very easy for us to meet with you if that would help explain this further; it may equally be expedient for you to visit our offices as we can the go through all the scheme data we have electronically.

I look forward to discussing this in more detail in the new year.

Kind Regards,

Patrick Eggenton

EAS Unit 108 The Maltings Stanstead Abbotts Herts SG12 8HG t 01920 871777 m 07709 694819 www.eastp.co.uk

2

Appendix: C LOCAL FACILITIES PLAN

Page C-3

Appendix: D FIVE YEAR ACCIDENT DATA

Page D-4

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Drg No. Rev Legend. Client Org. Hertfordshire County Council G-DP520.28/001/17653 Accidents by Maximum Severity U% Fatal Drawing Title. Sheet No. 1 of 1 Prepared ApprovedChecked U% Scale. N.T.S. Serious A414 and B1000 %U Slight Initials ACN Hertford Accidents from 1 Dec 2007 to 30 Nov 2012 Transport Planning Data Team Date Mar 2013 Hertfordshire County Council Postal Point CHN204 Selection Boundary County Hall Tel 01992 658339 Project Title. Project No. G-DP520 Pegs Lane File. Not Held Hertford SG13 8DN Data Services - Accident Data Supply Full Confidential Accident Report Date Produced: 08-Mar-13 Set Name (if saved) : 17653 Set Total : 16 Accident Details: Acc Ref: 2012-4100A0770 1st / 2nd Rd: B1000/1 Jun Detail: Notjunct Weather: Fine Num Cas: 1

Day of Week: Thu Parish: Hertford Jun Control: Notjunct Light: Darklit Num Peds: 0

Date: 08/11/2012 19:29:00 District: EHerts Spec Conditions: None Road Surface: Dry Num Vehicles: 2 Acc Severity: Slight Speed Limit: 30mph C/way Hazard: None C/way Type: Single Ped Xing: Nperpelx B1000 Welwyn Road, Hertford Approx 30m West J/w Fordwich Rise On Site: Yes

AccBoth Ref: Vs Cars Trav West On Welwyn Rd. V2 Stopped For Red Ats & V1 Collided With Rear Of V2

Easting:531238 Northing: 212842 Contributory Factors Participant Confidence Factor12 3 4 5 6 i s e d1A MisspeedV1 p e i g R c d iV B Speeding ReckdrivV1

Casualty Details

Acc Ref: 2012-4100A0770 Cas Class: Driver Car Passenger: No Cas Severity: Slight Ped Movement: Notped

Veh Ref: 2 Cas Age: 35 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 1 Cas Gender: Female Seat Belt: Yes School Pupil: Other Ped Work on Rd:

Vehicle Details

Acc Ref: 137146 Maneouvre: Stopping Skiding: None Impact Point:Front Driver Breath Test: Notreq Driver Age: 44

Veh Ref: 1 Location: Carw Object in Cway: None E Hit and Run:From: Nothtrun

Veh Type: Car+3whl Junction: Notjunct Object off Cway None To: W Driver Gender: Male

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Other Driver Severity: None

Acc Ref: Maneouvre: Stopping Skiding: None Impact Point:Back Driver Breath Test: Ntprov Driver Age: 35

Veh Ref: 2 Location: Carw Object in Cway: None E Hit and Run:From: Nothtrun

Veh Type: Car+3whl Junction: Notjunct Object off Cway None To: W Driver Gender: Female

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Other Driver Severity: Slight

Set Name (if saved) : 17653 Page 1 of 18 Accident Details: Acc Ref: 2012-4100A0273 1st / 2nd Rd: U606/10 U1236/1 Jun Detail: T Weather: Rain Num Cas: 2

Day of Week: Tue Parish: Hertford Jun Control: Gwy/unct Light: Daystlts Num Peds: 0

Date: 24/04/2012 11:05:00 District: EHerts Spec Conditions: None Road Surface: Wet Num Vehicles: 2 Acc Severity: Slight Speed Limit: 40mph C/way Hazard: None C/way Type: Single Ped Xing: Npernox U606 Thieves Lane Hertfordapprox 20m North J/w Ladywood Road On Site: Yes

AccV1 Car Ref: Following V2 Bus Trav South On Thieves Lane. V2 Has Stopped And V1 Attempts To Overtake But Realises It Is On A Blind Bend And Pulls Back In Andcollides With R/o/s V2

Easting:530792 Northing: 212560 Casualty Details

Acc Ref: 2012-4100A0273 Cas Class: Driver Car Passenger: No Cas Severity: Slight Ped Movement: Notped

Veh Ref: 1 Cas Age: 40 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 1 Cas Gender: Female Seat Belt: Yes School Pupil: Other Ped Work on Rd:

Acc Ref: 2012-4100A0273 Cas Class: Passenge Car Passenger: Rearseat Cas Severity: Slight Ped Movement: Notped

Veh Ref: 1 Cas Age: 2 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 2 Cas Gender: Female Seat Belt: Yes School Pupil: Other Ped Work on Rd:

Vehicle Details

Acc Ref: 135673 Maneouvre: Otakesta Skiding: None Impact Point:Front Driver Breath Test: Notreq Driver Age: 40

Veh Ref: 1 Location: Carw Object in Cway: None N Hit and Run:From: Nothtrun

Veh Type: Car+3whl Junction: Approach Object off Cway None To: S Driver Gender: Female

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Other Driver Severity: Slight

Acc Ref: Maneouvre: Waitahea Skiding: None Impact Point:Back Driver Breath Test: Notreq Driver Age: 45

Veh Ref: 2 Location: Carw Object in Cway: None N Hit and Run:From: Nothtrun

Veh Type: Psv Junction: Approach Object off Cway None To: S Driver Gender: Male

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Work Driver Severity: None

Set Name (if saved) : 17653 Page 2 of 18 Accident Details: Acc Ref: 2011-4100A0543 1st / 2nd Rd: B1000/3 U468/10 Jun Detail: T Weather: Fine Num Cas: 4

Day of Week: Sat Parish: Hertford Jun Control: Gwy/unct Light: Daystlts Num Peds: 0

Date: 01/10/2011 16:23:00 District: EHerts Spec Conditions: None Road Surface: Dry Num Vehicles: 3 Acc Severity: Slight Speed Limit: 40mph C/way Hazard: None C/way Type: Single Ped Xing: Npernox B1000 Welwyn Road, Hertford J/w Bentley Road On Site: Yes

AccV3 Car Ref: Trav West On Welwyn Rd Stops For Veh Waiting To Turn Right Into Bentley Rd. V2 Car Stops Behind V3. V1 Collides Rear V2 Which Collides Rear V3

Easting:530401 Northing: 213106 Contributory Factors Participant Confidence Factor12 3 4 5 6 l o d i M sp e e k rv1A Flookdri Misspeed ReckdrivV1

Casualty Details

Acc Ref: 2011-4100A0543 Cas Class: Driver Car Passenger: No Cas Severity: Slight Ped Movement: Notped

Veh Ref: 1 Cas Age: 58 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 1 Cas Gender: Female Seat Belt: Yes School Pupil: Other Ped Work on Rd:

Acc Ref: 2011-4100A0543 Cas Class: Driver Car Passenger: No Cas Severity: Slight Ped Movement: Notped

Veh Ref: 2 Cas Age: 60 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 2 Cas Gender: Female Seat Belt: Yes School Pupil: Other Ped Work on Rd:

Acc Ref: 2011-4100A0543 Cas Class: Driver Car Passenger: No Cas Severity: Slight Ped Movement: Notped

Veh Ref: 3 Cas Age: 62 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 3 Cas Gender: Female Seat Belt: Yes School Pupil: Other Ped Work on Rd:

Acc Ref: 2011-4100A0543 Cas Class: Passenge Car Passenger: Rearseat Cas Severity: Slight Ped Movement: Notped

Veh Ref: 3 Cas Age: 18 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 4 Cas Gender: Female Seat Belt: Yes School Pupil: Other Ped Work on Rd:

Vehicle Details

Acc Ref: 134261 Maneouvre: Ahead Skiding: None Impact Point:Front Driver Breath Test: Negati Driver Age: 58

Veh Ref: 1 Location: Carw Object in Cway: None E Hit and Run:From: Nothtrun Set Name (if saved) : 17653 Page 3 of 18 Veh Type: Car+3whl Junction: Approach Object off Cway None To: W Driver Gender: Female

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Other Driver Severity: Slight

Acc Ref: Maneouvre: Waitahea Skiding: None Impact Point:Back Driver Breath Test: Negati Driver Age: 60

Veh Ref: 2 Location: Carw Object in Cway: None E Hit and Run:From: Nothtrun

Veh Type: Car+3whl Junction: Approach Object off Cway None To: W Driver Gender: Female

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Other Driver Severity: Slight

Acc Ref: Maneouvre: Waitahea Skiding: None Impact Point:Back Driver Breath Test: Notreq Driver Age: 62

Veh Ref: 3 Location: Carw Object in Cway: None E Hit and Run:From: Nothtrun

Veh Type: Car+3whl Junction: Approach Object off Cway None To: W Driver Gender: Female

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Other Driver Severity: Slight

Set Name (if saved) : 17653 Page 4 of 18 Accident Details: Acc Ref: 2011-4100A0507 1st / 2nd Rd: A414/60 U1101/1 Jun Detail: R/bout Weather: Fine Num Cas: 2

Day of Week: Thu Parish: Hertford Jun Control: Gwy/unct Light: Darkunkn Num Peds: 0

Date: 22/09/2011 19:55:00 District: EHerts Spec Conditions: None Road Surface: Dry Num Vehicles: 2 Acc Severity: Slight Speed Limit: 40mph C/way Hazard: None C/way Type: Single Ped Xing: Npernox A414 Hertingfordbury Road Rbt J/w Willowmead & Campfield Road On Site: No-otc

AccV1 Car Ref: Trav West On Hertingfordbury Rd Stops At Rbt, V2 Lgv Approaches Fromrear And Hits R/o/s Corner V1 And F.t.s.

Easting:531654 Northing: 212361 Contributory Factors Participant Confidence Factor12 3 4 5 6 l o d i1A FlookdriV1

Casualty Details

Acc Ref: 2011-4100A0507 Cas Class: Driver Car Passenger: No Cas Severity: Slight Ped Movement: Notped

Veh Ref: 2 Cas Age: 40 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 1 Cas Gender: Male Seat Belt: Yes School Pupil: Other Ped Work on Rd:

Acc Ref: 2011-4100A0507 Cas Class: Passenge Car Passenger: Frontsea Cas Severity: Slight Ped Movement: Notped

Veh Ref: 2 Cas Age: 48 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 2 Cas Gender: Female Seat Belt: Yes School Pupil: Other Ped Work on Rd:

Vehicle Details

Acc Ref: 134061 Maneouvre: Ahead Skiding: None Impact Point:Front Driver Breath Test: Notcon Driver Age:

Veh Ref: 1 Location: Carw Object in Cway: None E Hit and Run:From: Hit&run

Veh Type: Gdltwght Junction: Approach Object off Cway None To: W Driver Gender: Unknown

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Other Driver Severity: None

Acc Ref: Maneouvre: Waitahea Skiding: None Impact Point:Back Driver Breath Test: Notcon Driver Age: 40

Veh Ref: 2 Location: Carw Object in Cway: None E Hit and Run:From: Nothtrun

Veh Type: Car+3whl Junction: Approach Object off Cway None To: W Driver Gender: Male

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Other Driver Severity: Slight

Set Name (if saved) : 17653 Page 5 of 18 Accident Details: Acc Ref: 2011-4100A0187 1st / 2nd Rd: A119/16 B1000/1 Jun Detail: R/bout Weather: Fine Num Cas: 1

Day of Week: Sat Parish: Hertford Jun Control: Gwy/unct Light: Daystlts Num Peds: 0

Date: 09/04/2011 09:40:00 District: EHerts Spec Conditions: None Road Surface: Dry Num Vehicles: 2 Acc Severity: Slight Speed Limit: 30mph C/way Hazard: None C/way Type: R/bout Ped Xing: Npercntr A119 North Road, Hertford Rbt J/w B1000 Welwyn Road On Site: Yes

AccV1 Car Ref: Entered Rbt To Turn Right From B1000 Welwyn Rd, But Failed To Give Way To Cyclist Riding V2 P/c Nw On A119 North Rd, Negotiating Rbt And V1 Struck R/n/s Of V2

Easting:531611 Northing: 212958 Contributory Factors Participant Confidence Factor12 3 4 5 6 l o d i1A FlookdriV1

Casualty Details

Acc Ref: 2011-4100A0187 Cas Class: Driver Car Passenger: No Cas Severity: Slight Ped Movement: Notped

Veh Ref: 2 Cas Age: 47 PSV Passenger: NoRoad User Class: Cyclists Ped Location: Notped

Cas Ref: 1 Cas Gender: Male Seat Belt: Notapp School Pupil: Other Ped Work on Rd:

Vehicle Details

Acc Ref: 133179 Maneouvre: Turnrigh Skiding: None Impact Point:Front Driver Breath Test: Notreq Driver Age: 48

Veh Ref: 1 Location: Carw Object in Cway: None Sw Hit and Run:From: Nothtrun

Veh Type: Car+3whl Junction: Er/about Object off Cway None To: Se Driver Gender: Male

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Other Driver Severity: None

Acc Ref: Maneouvre: Ahead Skiding: None Impact Point:Nearside Driver Breath Test: Notap Driver Age: 47

Veh Ref: 2 Location: Carw Object in Cway: None Se Hit and Run:From: Nothtrun

Veh Type: Bicycle Junction: Middle Object off Cway None To: Nw Driver Gender: Male

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Other Driver Severity: Slight

Set Name (if saved) : 17653 Page 6 of 18 Accident Details: Acc Ref: 2010-4100A0297 1st / 2nd Rd: C152/30 A414/56 Jun Detail: R/bout Weather: Fine Num Cas: 3

Day of Week: Tue Parish: Hertford Jun Control: Gwy/unct Light: Daystlts Num Peds: 0

Date: 06/04/2010 16:05:00 District: EHerts Spec Conditions: None Road Surface: Dry Num Vehicles: 2 Acc Severity: Slight Speed Limit: 60mph C/way Hazard: None C/way Type: Single Ped Xing: Npernox Hertingfordbury Road, Hertford 15m Se Rbt J/w A414 Hertingfordbury Road. On Site: Yes

AccBoth Ref: Vs Cars. V1 Having Negotiated Roundabout Exited Rbt To Trav Se On Hertingfordbury Road But For U/k Reason Crossed C/way To O/s Colliding Head On With V2 Trav Nw Approaching Rbt.

Easting:530665 Northing: 212352 Contributory Factors Participant Confidence Factor12 3 4 5 6 o to t1A LostcontV1

Casualty Details

Acc Ref: 2010-4100A0297 Cas Class: Driver Car Passenger: No Cas Severity: Slight Ped Movement: Notped

Veh Ref: 2 Cas Age: 19 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 1 Cas Gender: Male Seat Belt: Yes School Pupil: Other Ped Work on Rd:

Acc Ref: 2010-4100A0297 Cas Class: Passenge Car Passenger: Frontsea Cas Severity: Slight Ped Movement: Notped

Veh Ref: 2 Cas Age: 19 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 2 Cas Gender: Male Seat Belt: Yes School Pupil: Other Ped Work on Rd:

Acc Ref: 2010-4100A0297 Cas Class: Passenge Car Passenger: Frontsea Cas Severity: Slight Ped Movement: Notped

Veh Ref: 1 Cas Age: 22 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 3 Cas Gender: Male Seat Belt: Yes School Pupil: Other Ped Work on Rd:

Vehicle Details

Acc Ref: 130556 Maneouvre: Turnrigh Skiding: None Impact Point:Front Driver Breath Test: Notreq Driver Age: 26

Veh Ref: 1 Location: Carw Object in Cway: None W Hit and Run:From: Nothtrun

Veh Type: Car+3whl Junction: Lr/about Object off Cway None To: Se Driver Gender: Male

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Work Driver Severity: None

Set Name (if saved) : 17653 Page 7 of 18 Acc Ref: Maneouvre: Ahead Skiding: None Impact Point:Front Driver Breath Test: Notreq Driver Age: 19

Veh Ref: 2 Location: Carw Object in Cway: None Se Hit and Run:From: Nothtrun

Veh Type: Car+3whl Junction: Approach Object off Cway None To: Nw Driver Gender: Male

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Other Driver Severity: Slight

Set Name (if saved) : 17653 Page 8 of 18 Accident Details: Acc Ref: 2010-4100A0214 1st / 2nd Rd: A414/57 A414/56 Jun Detail: R/bout Weather: Fine Num Cas: 1

Day of Week: Fri Parish: Hertford Jun Control: Gwy/unct Light: Daystlts Num Peds: 0

Date: 26/03/2010 08:00:00 District: EHerts Spec Conditions: None Road Surface: Dry Num Vehicles: 2 Acc Severity: Slight Speed Limit: 70mph C/way Hazard: Pedestri C/way Type: Dual Ped Xing: Npernox A414 Eastbound C/way Towards Hertford Exact Location Not Reported Gridded 19m East Of Rbt J/w A414 Cole Green Bypass Hertingfordbury Road & On Site: No-otc Thieves Lane AccV2 Car Ref: & V1 M/c 50-125cc Both Trav East Into A414 Hertingfordbury Rd, From Rbt. V2 Stopped Suddenly To Allow Pedestrians To Cross Dual C/way (no X/ng) And V1 Skidded Into Rear Of V2

Easting:530698 Northing: 212401 Contributory Factors Participant Confidence Factor12 3 4 5 6 t p i g2B StoppingV2

Casualty Details

Acc Ref: 2010-4100A0214 Cas Class: Driver Car Passenger: No Cas Severity: Slight Ped Movement: Notped

Veh Ref: 1 Cas Age: 18 PSV Passenger: NoRoad User Class: Motorcyclists Ped Location: Notped

Cas Ref: 1 Cas Gender: Male Seat Belt: Notapp School Pupil: Other Ped Work on Rd:

Vehicle Details

Acc Ref: 130192 Maneouvre: Starting Skiding: Skidded Impact Point:Front Driver Breath Test: Notcon Driver Age: 18

Veh Ref: 1 Location: Carw Object in Cway: None W Hit and Run:From: Nothtrun

Veh Type: Mc<=125 Junction: Lr/about Object off Cway None To: E Driver Gender: Male

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Ridesch Driver Severity: Slight

Acc Ref: Maneouvre: Stopping Skiding: None Impact Point:Back Driver Breath Test: Notcon Driver Age:

Veh Ref: 2 Location: Carw Object in Cway: None W Hit and Run:From: Hit&run

Veh Type: Othmotor Junction: Exit Object off Cway None To: E Driver Gender: Unknown

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Other Driver Severity: None

Set Name (if saved) : 17653 Page 9 of 18 Accident Details: Acc Ref: 2009-4100A0682 1st / 2nd Rd: A414/57 A414/56 Jun Detail: R/bout Weather: Rain Num Cas: 1

Day of Week: Tue Parish: Hertford Jun Control: Gwy/unct Light: Daystlts Num Peds: 0

Date: 03/11/2009 12:10:00 District: EHerts Spec Conditions: None Road Surface: Wet Num Vehicles: 2 Acc Severity: Slight Speed Limit: 70mph C/way Hazard: None C/way Type: Dual Ped Xing: Npernox A414 Hertingfordbury Road, Hertford 5m East Of Rbt J/w A414 Bypass, Hertingfordbury Road & Thieves Lane On Site: Yes

AccBoth Ref: Vs Cars Trav Westbound In Ln2 Of A414 Hertingfordbury Rd Approaching Rbt Where V2 Stopped And V1 Braked Hard And Skidded Into Rear Of V2

Easting:530692 Northing: 212384 Contributory Factors Participant Confidence Factor12 3 4 5 6 t p i g1A StoppingV1 l pe t1B SlipweatV1

Casualty Details

Acc Ref: 2009-4100A0682 Cas Class: Driver Car Passenger: No Cas Severity: Slight Ped Movement: Notped

Veh Ref: 2 Cas Age: 28 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 1 Cas Gender: Female Seat Belt: Yes School Pupil: Other Ped Work on Rd:

Vehicle Details

Acc Ref: 129309 Maneouvre: Stopping Skiding: Skidded Impact Point:Front Driver Breath Test: Negati Driver Age: 33

Veh Ref: 1 Location: Carw Object in Cway: None E Hit and Run:From: Nothtrun

Veh Type: Gdmdwght Junction: Approach Object off Cway None To: W Driver Gender: Male

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Work Driver Severity: None

Acc Ref: Maneouvre: Waitahea Skiding: None Impact Point:Back Driver Breath Test: Negati Driver Age: 28

Veh Ref: 2 Location: Carw Object in Cway: None E Hit and Run:From: Nothtrun

Veh Type: Car+3whl Junction: Approach Object off Cway None To: W Driver Gender: Female

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Other Driver Severity: Slight

Set Name (if saved) : 17653 Page 10 of 18 Accident Details: Acc Ref: 2009-4100A0605 1st / 2nd Rd: A414/57 A414/56 Jun Detail: R/bout Weather: Fine Num Cas: 2

Day of Week: Sun Parish: Hertford Jun Control: Gwy/unct Light: Daystlts Num Peds: 0

Date: 27/09/2009 10:15:00 District: EHerts Spec Conditions: None Road Surface: Dry Num Vehicles: 2 Acc Severity: Slight Speed Limit: 70mph C/way Hazard: None C/way Type: Dual Ped Xing: Npernox A414 Hertingfordbury Road, Hertford 9m East Of Rbt J/w A414 Cole Green Bypass, Thieves Lane & C152 Hertingfordbury Road On Site: No-otc

AccBoth Ref: V2 Car & V1 U/k Veh Trav Westbound On A414 Hertingfordbury Rd In Ln1, Approaching Thieves Ln Rbt Where V2 Stopped, Waiting To Enter Rbt And V1 Collided With Rear Of V2

Easting:530690 Northing: 212380 Contributory Factors Participant Confidence Factor12 3 4 5 6 l o d i1A FlookdriV1

Casualty Details

Acc Ref: 2009-4100A0605 Cas Class: Driver Car Passenger: No Cas Severity: Slight Ped Movement: Notped

Veh Ref: 2 Cas Age: 31 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 1 Cas Gender: Female Seat Belt: Unknown School Pupil: Other Ped Work on Rd:

Acc Ref: 2009-4100A0605 Cas Class: Passenge Car Passenger: Frontsea Cas Severity: Slight Ped Movement: Notped

Veh Ref: 2 Cas Age: 31 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 2 Cas Gender: Male Seat Belt: Unknown School Pupil: Other Ped Work on Rd:

Vehicle Details

Acc Ref: 128807 Maneouvre: Ahead Skiding: None Impact Point:Front Driver Breath Test: Notcon Driver Age:

Veh Ref: 1 Location: Carw Object in Cway: None E Hit and Run:From: Nothtrun

Veh Type: Othmotor Junction: Approach Object off Cway None To: W Driver Gender: Male

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Other Driver Severity: None

Acc Ref: Maneouvre: Waitahea Skiding: None Impact Point:Back Driver Breath Test: Notcon Driver Age: 31

Veh Ref: 2 Location: Carw Object in Cway: None E Hit and Run:From: Nothtrun

Veh Type: Car+3whl Junction: Approach Object off Cway None To: W Driver Gender: Female

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Other Driver Severity: Slight

Set Name (if saved) : 17653 Page 11 of 18 Accident Details: Acc Ref: 2009-4100A0587 1st / 2nd Rd: A414/56 A414/54 Jun Detail: R/bout Weather: Rain Num Cas: 1

Day of Week: Tue Parish: Hertingf Jun Control: Gwy/unct Light: Darklit Num Peds: 0

Date: 15/09/2009 19:45:00 District: EHerts Spec Conditions: None Road Surface: Wet Num Vehicles: 1 Acc Severity: Slight Speed Limit: 70mph C/way Hazard: None C/way Type: R/bout Ped Xing: Npernox A414 Hertingfordbury Road, Hertford Rbt J/w A414 Hatfield Road, Thieves Lane & Hertingfordbury Road On Site: Yes

AccV1 Car Ref: Negotiating Right Turn From Thieves Ln On Rbt To Trav West On A414 Hertingfordbury Rd When Driver Lost Control And V1 Spun R/n/s Into Raised Kerb Coming To Rest Facing East In Ln1 At Exit Onto A414 W/b

Easting:530649 Northing: 212360 Contributory Factors Participant Confidence Factor12 3 4 5 6 o to t1A LostcontV1

Casualty Details

Acc Ref: 2009-4100A0587 Cas Class: Driver Car Passenger: No Cas Severity: Slight Ped Movement: Notped

Veh Ref: 1 Cas Age: 24 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 1 Cas Gender: Female Seat Belt: Yes School Pupil: Other Ped Work on Rd:

Vehicle Details

Acc Ref: 128791 Maneouvre: Turnrigh Skiding: Skidded Impact Point:Offside Driver Breath Test: Notreq Driver Age: 24

Veh Ref: 1 Location: Carw Object in Cway: Kerb Ne Hit and Run:From: Nothtrun

Veh Type: Car+3whl Junction: Middle Object off Cway None To: W Driver Gender: Female

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Other Driver Severity: Slight

Set Name (if saved) : 17653 Page 12 of 18 Accident Details: Acc Ref: 2009-4100A0420 1st / 2nd Rd: A414/56 U606/10 Jun Detail: R/bout Weather: Fine Num Cas: 1

Day of Week: Mon Parish: Hertingf Jun Control: Gwy/unct Light: Daystlts Num Peds: 0

Date: 13/07/2009 17:30:00 District: EHerts Spec Conditions: None Road Surface: Dry Num Vehicles: 2 Acc Severity: Slight Speed Limit: 70mph C/way Hazard: None C/way Type: R/bout Ped Xing: Npernox A414 Hertingfordbury Road, Hertford Rbt J/w Thieves Lane & C152 Hertingfordbury Road On Site: No-otc

AccCyclist Ref: Riding V2 P/c Negotiating Right Turn On A414 Rbt From C152 Hertingfordbury Rd Was Struck From O/s By Front Of V1 Car Also Negotiating Rbt

Easting:530639 Northing: 212405 Contributory Factors Participant Confidence Factor12 3 4 5 6 l o d i M sp e a s l s1B Flookdri Misspeed PassclosV1

Casualty Details

Acc Ref: 2009-4100A0420 Cas Class: Driver Car Passenger: No Cas Severity: Slight Ped Movement: Notped

Veh Ref: 2 Cas Age: 50 PSV Passenger: NoRoad User Class: Cyclists Ped Location: Notped

Cas Ref: 1 Cas Gender: Male Seat Belt: Notapp School Pupil: Other Ped Work on Rd:

Vehicle Details

Acc Ref: 128505 Maneouvre: Turnrigh Skiding: None Impact Point:Front Driver Breath Test: Notcon Driver Age:

Veh Ref: 1 Location: Carw Object in Cway: None Se Hit and Run:From: Nothtrun

Veh Type: Car+3whl Junction: Middle Object off Cway None To: E Driver Gender: Female

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Other Driver Severity: None

Acc Ref: Maneouvre: Turnrigh Skiding: None Impact Point:Offside Driver Breath Test: Notap Driver Age: 50

Veh Ref: 2 Location: Carw Object in Cway: None Se Hit and Run:From: Nothtrun

Veh Type: Bicycle Junction: Middle Object off Cway None To: E Driver Gender: Male

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Other Driver Severity: Slight

Set Name (if saved) : 17653 Page 13 of 18 Accident Details: Acc Ref: 2009-4100A0251 1st / 2nd Rd: A414/56 U606/10 Jun Detail: R/bout Weather: Fine Num Cas: 1

Day of Week: Fri Parish: Hertingf Jun Control: Gwy/unct Light: Daystlts Num Peds: 0

Date: 17/04/2009 12:13:00 District: EHerts Spec Conditions: None Road Surface: Dry Num Vehicles: 2 Acc Severity: Slight Speed Limit: 70mph C/way Hazard: None C/way Type: R/bout Ped Xing: Npernox A414 Hertingfordbury Road, Hertford Rbt J/w C152 Hertingfordbury Road And Thieves Lane On Site: No-otc

AccBoth Ref: Vs Cars Trav In U/k Direction On A414 Hertingfordbury Rd Negotiating Rbt When V1 Collided With Rear Of V2, Then Reversed And Drove Off

Easting:530655 Northing: 212415 Contributory Factors Participant Confidence Factor12 3 4 5 6 Flookdri Misspeed Swerved LostcontV1 B

Casualty Details

Acc Ref: 2009-4100A0251 Cas Class: Driver Car Passenger: No Cas Severity: Slight Ped Movement: Notped

Veh Ref: 2 Cas Age: 35 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 1 Cas Gender: Male Seat Belt: Unknown School Pupil: Other Ped Work on Rd:

Vehicle Details

Acc Ref: 127750 Maneouvre: Rightben Skiding: None Impact Point:Front Driver Breath Test: Notcon Driver Age: 30

Veh Ref: 1 Location: Carw Object in Cway: None Sw Hit and Run:From: Hit&run

Veh Type: Car+3whl Junction: Er/about Object off Cway None To: E Driver Gender: Male

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Other Driver Severity: None

Acc Ref: Maneouvre: Rightben Skiding: None Impact Point:Back Driver Breath Test: Notcon Driver Age: 35

Veh Ref: 2 Location: Carw Object in Cway: None Sw Hit and Run:From: Nothtrun

Veh Type: Car+3whl Junction: Er/about Object off Cway None To: E Driver Gender: Male

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Tofrowrk Driver Severity: Slight

Set Name (if saved) : 17653 Page 14 of 18 Accident Details: Acc Ref: 2008-4100A0831 1st / 2nd Rd: A414/57 Jun Detail: Notjunct Weather: Fine Num Cas: 1

Day of Week: Sat Parish: Hertford Jun Control: Notjunct Light: Darklit Num Peds: 0

Date: 06/12/2008 23:11:00 District: EHerts Spec Conditions: None Road Surface: Wet Num Vehicles: 1 Acc Severity: Slight Speed Limit: 70mph C/way Hazard: None C/way Type: Dual Ped Xing: Npernox A414 Hertingfordbury Road, Hertford Est 156m Nw Of J/w Valeside On Site: Yes

AccV1 Car Ref: Trav Se On A414 Hertingfordbury Rd With Driver Intoxicated. V1 Hit N/s Kerb, Driver Lost Control And V1 Left C/way N/s, Colliding With A Tree And Overturned

Easting:531123 Northing: 212337 Contributory Factors Participant Confidence Factor12 3 4 5 6 o to t Ac d iV A Lostcont AlcydrivV1

Casualty Details

Acc Ref: 2008-4100A0831 Cas Class: Driver Car Passenger: No Cas Severity: Slight Ped Movement: Notped

Veh Ref: 1 Cas Age: 43 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 1 Cas Gender: Female Seat Belt: Unknown School Pupil: Other Ped Work on Rd:

Vehicle Details

Acc Ref: 126906 Maneouvre: Ahead Skiding: Overturn Impact Point:Front Driver Breath Test: Positiv Driver Age: 43

Veh Ref: 1 Location: Carw Object in Cway: Kerb Nw Hit and Run:From: Nothtrun

Veh Type: Car+3whl Junction: Notjunct Object off Cway Tree To: Se Driver Gender: Female

Foreign Veh: Notfrv Towing; None velcwy Nrebound J Purpose: Other Driver Severity: Slight

Set Name (if saved) : 17653 Page 15 of 18 Accident Details: Acc Ref: 2008-4100A0701 1st / 2nd Rd: A414/56 U606/10 Jun Detail: R/bout Weather: Rain Num Cas: 3

Day of Week: Tue Parish: Hertingf Jun Control: Gwy/unct Light: Darklit Num Peds: 0

Date: 21/10/2008 03:00:00 District: EHerts Spec Conditions: None Road Surface: Wet Num Vehicles: 1 Acc Severity: Slight Speed Limit: 70mph C/way Hazard: None C/way Type: R/bout Ped Xing: Npernox A414 Hertingfordbury Road, Hertford Rbt J/w Thieves Lane & Hertingfordbury Road On Site: Yes

AccV1 Car Ref: Trav Ne On A414 Failed To Negotiate Rbt Colliding With N/s Barrier

Easting:530675 Northing: 212418 Contributory Factors Participant Confidence Factor12 3 4 5 6 o f s V A ToofastV1 l p e t Rc d iV B Slipweat ReckdrivV1

Casualty Details

Acc Ref: 2008-4100A0701 Cas Class: Driver Car Passenger: No Cas Severity: Slight Ped Movement: Notped

Veh Ref: 1 Cas Age: 18 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 1 Cas Gender: Male Seat Belt: Yes School Pupil: Other Ped Work on Rd:

Acc Ref: 2008-4100A0701 Cas Class: Passenge Car Passenger: Frontsea Cas Severity: Slight Ped Movement: Notped

Veh Ref: 1 Cas Age: 18 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 2 Cas Gender: Male Seat Belt: Yes School Pupil: Other Ped Work on Rd:

Acc Ref: 2008-4100A0701 Cas Class: Passenge Car Passenger: Rearseat Cas Severity: Slight Ped Movement: Notped

Veh Ref: 1 Cas Age: 18 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 3 Cas Gender: Male Seat Belt: Yes School Pupil: Other Ped Work on Rd:

Vehicle Details

Acc Ref: 126115 Maneouvre: Ahead Skiding: Skidded Impact Point:Front Driver Breath Test: Negati Driver Age: 18

Veh Ref: 1 Location: Carw Object in Cway: None Sw Hit and Run:From: Nothtrun

Veh Type: Car+3whl Junction: Er/about Object off Cway Sidcrash To: E Driver Gender: Male

Foreign Veh: Notfrv Towing; None velcwy Nearside J Purpose: Other Driver Severity: Slight

Set Name (if saved) : 17653 Page 16 of 18 Accident Details: Acc Ref: 2008-4100A0315 1st / 2nd Rd: A414/58 Jun Detail: Notjunct Weather: Fine Num Cas: 1

Day of Week: Sat Parish: Hertford Jun Control: Notjunct Light: Daystlts Num Peds: 1

Date: 26/04/2008 10:12:00 District: EHerts Spec Conditions: None Road Surface: Dry Num Vehicles: 1 Acc Severity: Slight Speed Limit: 40mph C/way Hazard: None C/way Type: Dual Ped Xing: Nperpelx A414 Hertingfordbury Road, Hertford 29m Sw Of Rbt J/w Willowmead & Campfield Road On Site: Yes

AccV1 Car Ref: Trav Sw On A414 Hertingfordbury Rd From Rbt Collided With Pedestriancrossing C/way From N/s Kerb, Using Pelican X/ng

Easting:531595 Northing: 212337 Contributory Factors Participant Confidence Factor12 3 4 5 6 lp d s1B IllpedesC1 l o d i1B FlookdriV1

Casualty Details

Acc Ref: 2008-4100A0315 Cas Class: Pedestri Car Passenger: Ped Cas Severity: Slight Ped Movement: Xnrside

Veh Ref: 1 Cas Age: 78 PSV Passenger: PedRoad User Class: Pedestrians Ped Location: Pedcross

Cas Ref: 1 Cas Gender: Female Seat Belt: Notapp School Pupil: Other Ped Work on Rd: No

Vehicle Details

Acc Ref: 124882 Maneouvre: Ahead Skiding: None Impact Point:Front Driver Breath Test: Negati Driver Age: 49

Veh Ref: 1 Location: Carw Object in Cway: None Ne Hit and Run:From: Nothtrun

Veh Type: Car+3whl Junction: Notjunct Object off Cway None To: Sw Driver Gender: Male

Foreign Veh: Notfrv Towing; None velcwy No J Purpose: Other Driver Severity: None

Set Name (if saved) : 17653 Page 17 of 18 Accident Details: Acc Ref: 2008-4100A0197 1st / 2nd Rd: U606/10 Jun Detail: Notjunct Weather: Fine Num Cas: 1

Day of Week: Sat Parish: Hertford Jun Control: Notjunct Light: Darkunli Num Peds: 0

Date: 29/03/2008 19:40:00 District: EHerts Spec Conditions: None Road Surface: Wet Num Vehicles: 1 Acc Severity: Slight Speed Limit: 40mph C/way Hazard: None C/way Type: Single Ped Xing: Npernox Thieves Lane, Hertford 20m Sw Of Ladywood Road On Site: Yes

AccV1 Car Ref: Trav Sw On Thieves Ln Into Downhill R/h Bend When, For U/k Reason, Driver Lost Control And V1 Veered O/s, Driver Overcorrected And V1 Left C/wayinto N/s Fence

Easting:530778 Northing: 212520 Contributory Factors Participant Confidence Factor12 3 4 5 6 l p e t Ls c n V A Slipweat LostcontV1

Casualty Details

Acc Ref: 2008-4100A0197 Cas Class: Driver Car Passenger: No Cas Severity: Slight Ped Movement: Notped

Veh Ref: 1 Cas Age: 24 PSV Passenger: NoRoad User Class: Car Users Ped Location: Notped

Cas Ref: 1 Cas Gender: Male Seat Belt: Yes School Pupil: Other Ped Work on Rd:

Vehicle Details

Acc Ref: 124390 Maneouvre: Rightben Skiding: None Impact Point:Nearside Driver Breath Test: Notreq Driver Age: 24

Veh Ref: 1 Location: Carw Object in Cway: None Ne Hit and Run:From: Nothtrun

Veh Type: Car+3whl Junction: Notjunct Object off Cway Otherobj To: Sw Driver Gender: Male

Foreign Veh: Notfrv Towing; None velcwy Nearside J Purpose: Other Driver Severity: Slight

Set Name (if saved) : 17653 Page 18 of 18

Appendix: E BUS ROUTES

Page E-5

Appendix: F POTENTIAL ACCESS OPTIONS

Page F-6

Appendix: G CENSUS (WORK PLACE DESTINATION )

Page G-7

Welwyn Road WestWelwyn Road East A414 West A414 East Total Lambeth Ward All people Works at Home Underground Train Bus Taxi Car Driver Car Passenger M/C Bicycle On Foot Other Hertford/North A414 East Barnet 43 0 0030 37 30000 37 Broxbourne 146 0 01360 118 63 0 00 118 Camden 28 0 02400 4 00000 4 City of London 67 0 06100 3 03000 3 Dacorum 18 0 0000 18 00000 18 East Hertfordshire Bishop's Stortford All Saints 3 0 0 0 0 0 3 0 0 0 0 0 3 Bishop's Stortford Central 6 0 0 0 0 0 3 0 0 0 3 0 3 Bishop's Stortford Meads 4 0 0 0 0 0 4 0 0 0 0 0 4 Bishop's Stortford South 3 0 0 0 0 0 3 0 0 0 0 0 3 Braughing 3 0 0000 3 000 00 3 Buntingford 10 0 0 0 0 0 10 0 0 0 0 0 10 Great Amwell 9 0 0300 6 00 0 00 3 Hertford Bengeo 88 0 0 0 4 0 39 11 0 5 29 0 39 Hertford Castle 502 0 0 3 76 3 234 49 4 24 109 0 234 Hertford Heath 31 0 0 0 0 0 19 0 6 3 3 0 19 Hertford Kingsmead 106 0 0 0 6 0 65 9 3 8 12 3 65 Hertford Rural North 8 0 0 000 8 0 0 0 0 0 8 Hertford Rural South 17 0 0 0 0 0 14 0 0 0 3 0 14 Hertford Sele 420 195 3 11 3 0 129 14 3 11 51 0 129 Hunsdon 6 0 0000 3 000 30 Much Hadham 4 0 0000 4 00 0 00 4 Mundens and Cottered 3 0 0 0 0 0 3 0 0 0 0 0 3 Puckeridge 3 0 0000 3 00 0 00 3 Sawbridgeworth 8 0 0000 5 00 0 3 0 5 Stanstead Abbots 12 0 0 0 0 0 12 0 0 0 0 0 12 Thundridge & Standon 24 0 0 0 0 0 21 3 0 0 0 0 21 Walkern 6 0 0000 6 00000 6 Ware Chadwell 53 0 0 0 4 0 39 4 0 3 0 3 39 Ware Christchurch 41 0 0 330 29 3 0 0 3 0 29 Ware St Mary's 50 0 0 0 0 0 43 0 3 4 0 0 43 Ware Trinity 3 0 0000 3 00 0 00 3 Watton-at-Stone 11 0 0 0 0 0 8 0 0 0 3 0 8 Enfield 81 0 01803 51 900 00 51 Epping Forest 28 0 0000 22 30030 22 Hackney 16 0 01000 6 00000 6 Haringey 12 0 0300 9 00000 9 Harlow 55 0 0300 49 30000 49 Hertsmere 26 0 0000 26 00000 26 Islington 26 0 01700 9 00000 9 Luton 13 0 0000 13 00000 13 Milton Keynes 18 0 0000 18 00000 18 North Hertfordshire Arbury 3 0 00003 00000 3 Baldock Town 6 0 0300 3 00 0 00 3 Hitchin Bearton 3 0 0 0 0 0 3 0 0 0 0 0 3 3 0 0000 3 000 00 3 Letchworth East 3 0 0 0 0 0 3 0 0 0 0 0 3 Letchworth South West 3 0 0 0 0 0 3 0 0 0 0 0 3 Royston Palace 3 0 0 0 0 0 3 0 0 0 0 0 3 Weston and Sandon 3 0 0 0 0 0 3 0 0 0 0 0 3 33 0 0000 30 30000 30 Stevenage 60 0 01000 47 300 00 47 Tower Hamlets 10 0 0700 3 00000 3 Uttlesford 19 0 3000 16 00000 16 17 0 0000 17 00000 17 Welwyn Hatfield 290 0 0 0 6 0 238 25 6 15 0 0 238 Westminster 65 0 64600 13 000 00 13 Other 153 0 02700 114 03 6 30 Grand Total 2685 195 12 262 111 6 1604 148 34 79 228 6 309 263 823 89 0 1484 21% 18% 55% 6% 0% 100%

Appendix: H TRAFFIC SURVEY DATA

Page H-8

Hertfordshire - Manual Traffic Survey, Tuesday 4th December 2012

Junction: Thieves Lane / A414 / Hertingfordbury Road

Approach: Thieves Lane

Left to A414 (East) Ahead to Hertingfordbury Road Right to A414 (West) TIME P/CYCLE M/CYCLE CAR LGV OGV1 OGV2 BUS TOTAL P/CYCLE M/CYCLE CAR LGV OGV1 OGV2 BUS TOTAL P/CYCLE M/CYCLE CAR LGV OGV1 OGV2 BUS TOTAL 0730 - 0745 0 0 9 2 0 0 0 11 0 0 3 1 0 0 0 4 0 0 79 5 0 0 0 84 0745 - 0800 0 0 20 3 0 0 0 23 0 0 4 1 0 0 0 5 0 1 98 10 1 0 0 110 Hourly Total 0 0 29 5 0 0 0 34 0 0 7 2 0 0 0 9 0 1 177 15 1 0 0 194 0800 - 0815 0 0 26 2 0 0 0 28 0 0 2 2 0 0 0 4 0 0 77 7 1 0 0 85 0815 - 0830 0 0 25 2 0 0 0 27 0 0 15 0 0 0 0 15 0 0 92 6 0 0 0 98 0830 - 0845 0 0 31 2 0 1 1 35 0 0 36 2 0 0 0 38 0 0 120 11 0 0 0 131 0845 - 0900 0 0 18 4 0 0 0 22 0 0 19 1 0 0 0 20 0 2 83 9 0 0 0 94 Hourly Total 0 0 100 10 0 1 1 112 0 0 72 5 0 0 0 77 0 2 372 33 1 0 0 408 0900 - 0915 0 0 22 2 1 0 0 25 0 0 5 1 0 0 0 6 0 1 79 6 0 0 0 86 0915 - 0930 0 0 20 8 2 0 0 30 1 0 2 0 0 0 0 3 0 0 43 3 0 0 0 46 Hourly Total 0 0 42 10 3 0 0 55 1 0 7 1 0 0 0 9 0 1 122 9 0 0 0 132

Session Total 0 0 171 25 3 1 1 201 1 0 86 8 0 0 0 95 0 4 671 57 2 0 0 734

1630 - 1645 0 0 14 2 0 0 0 16 0 0 2 0 0 0 1 3 0 0 39 3 0 0 0 42 1645 - 1700 0 0 12 1 0 0 0 13 0 0 4 1 0 0 0 5 0 0 28 3 0 0 0 31 Hourly Total 0 0 26 3 0 0 0 29 0 0 6 1 0 0 1 8 0 0 67 6 0 0 0 73 1700 - 1715 0 0 7 2 0 0 0 9 0 0 5 0 0 0 0 5 0 0 28 5 0 0 2 35 1715 - 1730 0 0 18 0 0 0 0 18 0 0 4 2 0 0 0 6 0 0 33 5 0 0 0 38 1730 - 1745 0 0 19 3 0 0 0 22 0 0 4 1 0 0 0 5 0 0 34 1 0 0 0 35 1745 - 1800 0 0 20 1 0 0 0 21 0 0 2 1 0 0 0 3 0 0 33 1 0 0 0 34 Hourly Total 0 0 64 6 0 0 0 70 0 0 15 4 0 0 0 19 0 0 128 12 0 0 2 142 1800 - 1815 0 0 18 0 0 0 0 18 0 0 4 1 0 0 0 5 0 0 30 2 0 0 0 32 1815 - 1830 0 0 13 1 0 0 1 15 0 0 3 0 0 0 0 3 0 0 30 1 0 0 0 31 Hourly Total 0 0 31 1 0 0 1 33 0 0 7 1 0 0 0 8 0 0 60 3 0 0 0 63

Session Total 0 0 121 10 0 0 1 132 0 0 28 6 0 0 1 35 0 0 255 21 0 0 2 278 Hertfordshire - Manual Traffic Survey, Tuesday 4th December 2012

Junction: Thieves Lane / A414 / Hertingfordbury Road

Approach: A414 (East)

Left to Hertingfordbury Road Ahead to A414 (West) Right to Thieves Lane TIME P/CYCLE M/CYCLE CAR LGV OGV1 OGV2 BUS TOTAL P/CYCLE M/CYCLE CAR LGV OGV1 OGV2 BUS TOTAL P/CYCLE M/CYCLE CAR LGV OGV1 OGV2 BUS TOTAL 0730 - 0745 0 0 4 2 0 0 0 6 0 1 311 43 8 5 1 369 0 0 13 1 0 0 0 14 0745 - 0800 0 0 5 2 0 0 0 7 0 1 304 49 4 2 2 362 0 1 14 7 0 0 0 22 Hourly Total 0 0 9 4 0 0 0 13 0 2 615 92 12 7 3 731 0 1 27 8 0 0 0 36 0800 - 0815 0 0 10 3 0 0 0 13 0 2 319 39 1 6 0 367 0 0 21 4 0 0 1 26 0815 - 0830 3 0 20 2 0 0 0 25 0 3 268 35 4 2 0 312 0 0 31 5 1 1 0 38 0830 - 0845 0 0 15 3 0 0 0 18 0 0 272 27 2 6 1 308 0 0 41 3 0 0 0 44 0845 - 0900 0 0 12 0 0 0 0 12 0 1 293 25 6 5 1 331 0 0 40 4 0 0 0 44 Hourly Total 3 0 57 8 0 0 0 68 0 6 1152 126 13 19 2 1318 0 0 133 16 1 1 1 152 0900 - 0915 0 0 6 1 0 0 0 7 1 0 267 35 8 6 1 318 0 0 15 3 1 0 1 20 0915 - 0930 0 0 6 2 0 0 0 8 0 1 212 33 6 11 1 264 0 0 20 6 1 0 0 27 Hourly Total 0 0 12 3 0 0 0 15 1 1 479 68 14 17 2 582 0 0 35 9 2 0 1 47

Session Total 3 0 78 15 0 0 0 96 1 9 2246 286 39 43 7 2631 0 1 195 33 3 1 2 235

1630 - 1645 0 0 12 3 0 0 0 15 0 0 214 29 1 2 0 246 0 0 34 6 0 1 0 41 1645 - 1700 0 0 10 1 0 0 0 11 0 0 177 26 1 1 3 208 0 0 40 8 0 0 0 48 Hourly Total 0 0 22 4 0 0 0 26 0 0 391 55 2 3 3 454 0 0 74 14 0 1 0 89 1700 - 1715 0 0 8 0 0 0 0 8 0 0 172 20 3 2 0 197 0 1 49 6 0 0 0 56 1715 - 1730 0 0 12 0 0 0 0 12 0 0 146 14 0 2 0 162 0 0 67 3 0 0 0 70 1730 - 1745 0 0 10 1 0 0 0 11 0 0 163 6 1 0 0 170 0 0 46 8 0 0 0 54 1745 - 1800 0 0 12 4 0 0 0 16 0 0 170 17 2 2 1 192 0 0 59 7 1 1 1 69 Hourly Total 0 0 42 5 0 0 0 47 0 0 651 57 6 6 1 721 0 1 221 24 1 1 1 249 1800 - 1815 0 0 7 0 0 0 0 7 0 1 181 16 2 2 0 202 0 2 66 5 0 0 0 73 1815 - 1830 0 0 12 2 0 0 0 14 0 0 208 18 4 3 1 234 0 0 59 7 0 0 0 66 Hourly Total 0 0 19 2 0 0 0 21 0 1 389 34 6 5 1 436 0 2 125 12 0 0 0 139

Session Total 0 0 83 11 0 0 0 94 0 1 1431 146 14 14 5 1611 0 3 420 50 1 2 1 477 Hertfordshire - Manual Traffic Survey, Tuesday 4th December 2012

Junction: Thieves Lane / A414 / Hertingfordbury Road

Approach: Hertingfordbury Road

Left to A414 (West) Ahead to Thieves Lane Right to A414 (East) TIME P/CYCLE M/CYCLE CAR LGV OGV1 OGV2 BUS TOTAL P/CYCLE M/CYCLE CAR LGV OGV1 OGV2 BUS TOTAL P/CYCLE M/CYCLE CAR LGV OGV1 OGV2 BUS TOTAL 0730 - 0745 0 0 1 1 0 0 0 2 0 0 1 0 0 0 0 1 0 0 14 4 0 0 0 18 0745 - 0800 0 0 1 0 0 0 0 1 0 0 1 1 0 0 0 2 0 0 11 2 2 0 0 15 Hourly Total 0 0 2 1 0 0 0 3 0 0 2 1 0 0 0 3 0 0 25 6 2 0 0 33 0800 - 0815 0 0 6 0 0 0 0 6 0 0 6 1 0 0 2 9 0 0 20 1 0 0 0 21 0815 - 0830 0 0 2 0 0 0 0 2 0 0 6 0 0 0 0 6 0 0 18 1 1 0 0 20 0830 - 0845 0 0 5 0 0 0 0 5 0 0 8 1 0 0 0 9 0 0 26 1 0 0 0 27 0845 - 0900 0 0 7 0 0 0 0 7 0 0 8 1 0 0 0 9 0 0 30 2 0 0 0 32 Hourly Total 0 0 20 0 0 0 0 20 0 0 28 3 0 0 2 33 0 0 94 5 1 0 0 100 0900 - 0915 0 0 2 0 0 0 0 2 0 0 6 1 0 0 0 7 0 0 39 2 1 0 0 42 0915 - 0930 0 0 4 0 0 0 0 4 0 0 4 0 0 0 0 4 0 0 21 2 0 0 0 23 Hourly Total 0 0 6 0 0 0 0 6 0 0 10 1 0 0 0 11 0 0 60 4 1 0 0 65

Session Total 0 0 28 1 0 0 0 29 0 0 40 5 0 0 2 47 0 0 179 15 4 0 0 198

1630 - 1645 0 0 4 1 0 0 0 5 0 0 2 1 0 0 0 3 0 0 14 2 0 0 0 16 1645 - 1700 0 0 3 0 0 0 0 3 0 0 6 1 0 0 0 7 0 0 23 5 0 0 0 28 Hourly Total 0 0 7 1 0 0 0 8 0 0 8 2 0 0 0 10 0 0 37 7 0 0 0 44 1700 - 1715 0 0 5 0 0 0 0 5 0 0 7 1 0 0 0 8 0 0 22 1 0 0 0 23 1715 - 1730 0 0 4 0 0 0 0 4 0 0 10 0 0 0 0 10 0 0 17 3 0 0 0 20 1730 - 1745 0 0 2 0 0 0 0 2 0 0 6 3 0 0 0 9 0 0 17 3 0 0 0 20 1745 - 1800 0 0 3 0 0 0 0 3 0 0 13 2 0 0 0 15 0 0 21 4 0 0 0 25 Hourly Total 0 0 14 0 0 0 0 14 0 0 36 6 0 0 0 42 0 0 77 11 0 0 0 88 1800 - 1815 0 0 3 0 0 0 0 3 0 0 8 0 0 0 0 8 0 0 18 1 0 0 0 19 1815 - 1830 0 0 1 0 0 0 0 1 0 0 7 1 0 0 0 8 0 0 16 1 0 0 0 17 Hourly Total 0 0 4 0 0 0 0 4 0 0 15 1 0 0 0 16 0 0 34 2 0 0 0 36

Session Total 0 0 25 1 0 0 0 26 0 0 59 9 0 0 0 68 0 0 148 20 0 0 0 168 Hertfordshire - Manual Traffic Survey, Tuesday 4th December 2012

Junction: Thieves Lane / A414 / Hertingfordbury Road

Approach: A414 (West)

Left to Thieves Lane Ahead to A414 (East) Right to Hertingfordbury Road TIME P/CYCLE M/CYCLE CAR LGV OGV1 OGV2 BUS TOTAL P/CYCLE M/CYCLE CAR LGV OGV1 OGV2 BUS TOTAL P/CYCLE M/CYCLE CAR LGV OGV1 OGV2 BUS TOTAL 0730 - 0745 0 0 13 5 0 0 0 18 0 2 189 35 3 6 0 235 0 0 1 1 0 0 0 2 0745 - 0800 0 0 27 1 1 0 0 29 0 2 200 24 4 2 0 232 0 0 3 0 0 0 0 3 Hourly Total 0 0 40 6 1 0 0 47 0 4 389 59 7 8 0 467 0 0 4 1 0 0 0 5 0800 - 0815 0 0 24 3 0 0 1 28 0 2 180 19 3 2 2 208 0 0 10 1 0 0 0 11 0815 - 0830 0 0 20 0 0 0 0 20 0 2 180 21 4 3 1 211 0 0 9 0 0 0 0 9 0830 - 0845 0 0 17 2 0 0 0 19 0 2 149 14 6 4 1 176 0 0 18 0 0 0 0 18 0845 - 0900 0 0 12 2 1 0 0 15 0 1 155 19 2 3 1 181 0 0 7 1 0 0 0 8 Hourly Total 0 0 73 7 1 0 1 82 0 7 664 73 15 12 5 776 0 0 44 2 0 0 0 46 0900 - 0915 0 0 12 2 1 0 0 15 0 3 135 11 5 1 2 157 0 0 4 1 0 0 0 5 0915 - 0930 0 0 15 2 0 0 0 17 0 0 150 21 4 0 0 175 0 0 3 0 0 0 0 3 Hourly Total 0 0 27 4 1 0 0 32 0 3 285 32 9 1 2 332 0 0 7 1 0 0 0 8

Session Total 0 0 140 17 3 0 1 161 0 14 1338 164 31 21 7 1575 0 0 55 4 0 0 0 59

1630 - 1645 0 0 44 8 1 0 0 53 0 4 199 40 3 3 0 249 0 0 2 1 0 0 0 3 1645 - 1700 0 0 56 19 0 0 0 75 0 3 200 33 1 3 0 240 0 0 13 1 0 0 0 14 Hourly Total 0 0 100 27 1 0 0 128 0 7 399 73 4 6 0 489 0 0 15 2 0 0 0 17 1700 - 1715 0 1 69 10 0 0 0 80 0 1 191 31 0 1 2 226 0 0 4 0 0 0 0 4 1715 - 1730 0 0 85 9 1 0 0 95 0 0 197 37 1 1 0 236 0 0 7 1 0 0 0 8 1730 - 1745 1 1 93 8 0 0 0 103 0 1 197 37 1 0 0 236 0 0 13 0 1 0 0 14 1745 - 1800 0 0 85 6 0 0 0 91 0 1 203 20 2 4 0 230 0 0 6 2 0 0 0 8 Hourly Total 1 2 332 33 1 0 0 369 0 3 788 125 4 6 2 928 0 0 30 3 1 0 0 34 1800 - 1815 0 0 87 8 0 0 1 96 0 0 212 21 2 0 0 235 0 0 7 0 0 0 0 7 1815 - 1830 0 1 69 4 0 0 0 74 0 2 226 11 1 1 0 241 0 0 8 0 0 0 0 8 Hourly Total 0 1 156 12 0 0 1 170 0 2 438 32 3 1 0 476 0 0 15 0 0 0 0 15

Session Total 1 3 588 72 2 0 1 667 0 12 1625 230 11 13 2 1893 0 0 60 5 1 0 0 66 Hertfordshire - Manual Traffic Survey, Tuesday 4th December 2012 13 Thieves A414Ln Hertingfordbury E A414N/A W Rd 7 2 ## TRUE TRUE TRUE FALSE

Junction: Thieves Lane / A414 / Hertingfordbury Road

Vehicle Class: ALL CLASSES Start Time: 1) 0730 End Time: 1) 0930 Peak Hour

734 95 201 Thieves Lane 161 NORTH

1575 235

A414 (West) A414 (East)

59 2631

y Road y 96 Hertingfordbur

29 47 198

Note: The above diagram represents the Junction surveyed, although may not be the exact layout of the actual location.

Important This spreadsheet & Interactive Vehicle Flow Diagram was produced based on specific Note: parameters. Consequently, alteration to the spreadsheet format or it's properties may result in malfunction. Hertfordshire - Manual Traffic Survey, Tuesday 4th December 2012

Junction: Thieves Lane / A414 / Hertingfordbury Road

Approach: A414 (West)

Thieves Lane A414 (East) Hertingfordbury Road A414 (West) TIME Lane 1 Lane 2 Lane 1 Lane 2 Lane 1 Lane 2 Lane 1 Lane 2 0730 - 0745 2 1 2 2 1 0 3 2 0745 - 0800 2 2 3 2 2 0 3 3 0800 - 0815 1 2 4 2 1 0 4 2 0815 - 0830 1 2 6 4 2 3 3 2 0830 - 0845 2 0 7 6 3 2 5 2 0845 - 0900 0 0 6 5 1 2 4 1 0900 - 0915 1 0 4 4 1 2 3 2 0915 - 0930 1 0 4 3 1 1 3 3

1630 - 1645 4 0 6 3 1 0 6 4 1645 - 1700 0 0 7 2 3 2 6 3 1700 - 1715 2 0 5 3 3 3 3 2 1715 - 1730 2 0 4 2 3 2 4 3 1730 - 1745 3 0 7 4 3 2 5 4 1745 - 1800 1 0 5 3 3 1 7 3 1800 - 1815 0 0 5 2 2 2 6 3 1815 - 1830 0 0 4 2 2 1 5 4 TRAFFIC SURVEY - JUNCTION (CLASSIFIED) 1100 to 1400

Road No B1000 Location Welwyn Road j/w Thieves Lane, Hertford. Hertfordshire Day & Date Tuesday 24th May 2011 Job No. 11-052 Grid Ref. 59 Highways Weather & comments Fine

STRAIGHT ON RIGHT INTO TO Welwyn Road eastbound INTO Thieves Lane T O FROM FROM Welwyn Road FROM Welwyn Road T HCV HCV HCV A HOUR P/C M/C CARS PSV LCV <3 TON >3 TON TOTAL P/C M/C CARS PSV LCV <3 TON >3 TON TOTAL P/C M/C CARS PSV LCV <3 TON >3 TON TOTAL HOUR L CHEVRON excl P/C CHEVRON excl P/C CHEVRON excl P/C 07:00 0 0 22 0 3 1 0 26 0 0 9 0 1 0 0 10 07:00 36

07:15 0 0 26 0 4 0 0 30 0 0 7 0 2 0 0 9 07:15 39

07:30 0 0 56 0 12 0 0 68 0 0 14 2 6 0 0 22 07:30 90

07:45 0 0 84 2 11 0 0 97 0 1 22 0 3 0 0 26 07:45 123

08:00 0 2 90 1 8 2 0 103 0 0 36 0 1 0 1 38 08:00 141

08:15 0 0 48 2 6 1 1 58 0 0 24 1 1 0 0 26 08:15 84

08:30 0 2 41 2 7 1 1 54 0 0 30 0 2 0 0 32 08:30 86

08:45 0 0 48 0 6 0 0 54 0 0 16 0 4 0 0 20 08:45 74

09:00 0 0 29 0 4 0 0 33 0 0 12 0 2 0 0 14 09:00 47

09:15 0 0 24 0 3 0 0 27 0 0 17 0 0 0 0 17 09:15 44

09:30 0 0 32 5 1 0 0 38 0 0 9 0 0 0 0 9 09:30 47

09:45 0 0 18 1 5 0 0 24 0 0 10 0 0 0 0 10 09:45 34

Totals 0 4 518 13 70 5 2 612 0 1 206 3 22 0 1 Totals 845

T STRAIGHT ON RIGHT O INTO TO Welwyn Road eastbound INTO Thieves Lane T A FROM FROM Welwyn Road FROM Welwyn Road L 12:00 0 0 37 0 3 2 2 44 0 0 5 1 0 0 1 7 12:00 51

12:15 0 0 25 0 4 0 1 30 0 0 8 0 0 0 0 8 12:15 38

12:30 0 0 19 0 1 1 0 21 0 0 9 0 2 0 0 11 12:30 32

12:45 0 3 35 1 5 0 0 44 0 0 11 0 0 0 1 12 12:45 56

13:00 0 0 24 0 4 0 0 28 0 0 8 0 1 0 0 9 13:00 37

13:15 0 0 32 2 2 0 0 36 0 0 10 0 3 1 0 14 13:15 50

13:30 0 0 28 1 2 0 0 31 0 1 6 0 0 0 0 7 13:30 38

13:45 0 0 17 0 3 0 1 21 0 0 8 0 0 0 0 8 13:45 29

Totals 0 3 217 4 24 3 4 255 0 1 65 1 6 1 2 76 Totals 331

T STRAIGHT ON RIGHT O INTO TO Welwyn Road eastbound INTO Thieves Lane T A FROM FROM Welwyn Road FROM Welwyn Road L 16:00 0 0 49 0 8 0 2 59 0 0 14 0 1 1 1 17 16:00 76

16:15 0 2 60 1 10 1 0 74 0 0 11 0 0 1 0 12 16:15 86

16:30 0 1 44 1 6 0 0 52 0 0 9 0 1 0 0 10 16:30 62

16:45 0 0 46 1 5 0 0 52 0 0 12 0 1 0 0 13 16:45 65

17:00 0 0 134 1 8 1 0 144 0 0 21 0 1 0 0 22 17:00 166

17:15 0 0 127 1 6 0 0 134 0 0 16 0 0 0 0 16 17:15 150

17:30 0 0 79 0 3 0 0 82 0 0 14 0 1 0 0 15 17:30 97

17:45 2 0 115 1 3 1 0 120 0 1 37 1 2 0 0 41 17:45 161

18:00 1 0 83 1 8 0 0 92 0 1 19 0 2 0 0 22 18:00 114

18:15 1 2 42 1 4 0 0 49 0 0 7 0 0 0 0 7 18:15 56

18:30 0 0 50 0 3 0 0 53 1 0 21 0 0 0 0 21 18:30 74

18:45 0 2 47 0 0 0 0 49 0 0 11 0 0 0 0 11 18:45 60

Totals 4 7 876 8 64 3 2 960 1 2 192 1 9 2 1 207 Totals 1167

FORM SF-224a SPECIAL ISSUE 3 Page 1 of 4 TRAFFIC SURVEY - JUNCTION (CLASSIFIED) 1100 to 1400

Road No B1000 Location Welwyn Road j/w Thieves Lane, Hertford. Hertfordshire Day & Date Tuesday 24th May 2011 Job No. 11-052 Grid Ref. 59 Highways Weather & comments Fine Period changeover at 12:15 was delayed to 12:20.

LEFT RIGHT INTO Welwyn Road westbound TO INTO Welwyn Road eastbound T O FROM Thieves Lane FROM FROM Thieves Lane T HCV HCV HCV A HOUR P/C M/C CARS PSV LCV <3 TON >3 TON TOTAL P/C M/C CARS PSV LCV <3 TON >3 TON TOTAL P/C M/C CARS PSV LCV <3 TON >3 TON TOTAL HOUR L CHEVRON excl P/C CHEVRON excl P/C CHEVRON excl P/C 07:00 0 0 10 0 5 0 0 15 0 0 8 0 3 1 2 14 07:00 29

07:15 0 0 19 0 3 0 0 22 0 0 14 0 7 0 2 23 07:15 45

07:30 0 1 21 0 2 0 0 24 0 0 37 0 5 0 1 43 07:30 67

07:45 1 3 30 0 6 1 0 40 0 0 28 1 9 1 0 39 07:45 79

08:00 0 1 49 1 3 0 0 54 0 0 35 6 8 2 0 51 08:00 105

08:15 0 0 55 0 3 0 0 58 0 0 34 0 0 1 2 37 08:15 95

08:30 0 0 71 0 1 2 0 74 1 0 46 1 0 0 0 47 08:30 121

08:45 0 0 60 0 5 0 0 65 0 0 41 1 2 1 1 46 08:45 111

09:00 0 0 38 0 0 0 0 38 0 0 25 0 5 1 0 31 09:00 69

09:15 0 0 18 0 3 0 0 21 0 0 22 0 3 1 0 26 09:15 47

09:30 0 0 24 0 6 1 0 31 0 0 15 0 0 2 1 18 09:30 49

09:45 0 0 19 0 0 0 1 20 0 0 23 0 1 0 0 24 09:45 44

Totals 1 5 414 1 37 4 1 462 1 0 328 9 43 10 9 Totals 861

T LEFT RIGHT O INTO Welwyn Road westbound TO INTO Welwyn Road eastbound T A FROM Thieves Lane FROM FROM Thieves Lane L 12:00 0 0 11 0 3 0 0 14 0 0 36 0 4 0 1 41 12:00 55

12:15 0 0 9 0 2 0 0 11 0 1 13 0 4 0 0 18 12:15 29

12:30 1 0 15 0 2 0 0 17 1 0 42 0 5 0 0 47 12:30 64

12:45 1 0 20 0 2 0 0 22 0 0 43 0 1 0 0 44 12:45 66

13:00 0 0 12 0 2 0 0 14 0 0 21 0 7 0 1 29 13:00 43

13:15 0 0 15 0 2 0 0 17 0 0 31 1 1 1 0 34 13:15 51

13:30 0 0 10 0 2 1 0 13 0 0 15 0 2 1 0 18 13:30 31

13:45 0 0 17 0 4 2 0 23 0 0 28 1 5 0 0 34 13:45 57

Totals 2 0 109 0 19 3 0 131 1 1 229 2 29 2 2 265 Totals 396

T LEFT RIGHT O INTO Welwyn Road westbound TO INTO Welwyn Road eastbound T A FROM Thieves Lane FROM FROM Thieves Lane L 16:00 0 2 18 1 2 0 0 23 0 0 49 0 12 0 0 61 16:00 84

16:15 0 1 28 0 6 0 0 35 0 0 52 0 12 0 0 64 16:15 99

16:30 0 0 25 0 1 0 0 26 0 0 60 0 11 0 0 71 16:30 97

16:45 0 0 27 0 4 0 0 31 0 1 90 0 10 2 0 103 16:45 134

17:00 0 0 36 0 9 0 0 45 0 1 94 0 22 1 0 118 17:00 163

17:15 0 0 22 0 1 0 0 23 0 0 83 2 8 0 0 93 17:15 116

17:30 0 0 36 0 5 0 0 41 0 0 106 1 8 2 0 117 17:30 158

17:45 1 0 32 0 2 1 0 35 0 2 82 0 7 0 0 91 17:45 126

18:00 0 1 25 0 3 0 0 29 0 0 87 0 10 3 0 100 18:00 129

18:15 0 1 32 0 1 0 0 34 0 0 62 0 6 0 0 68 18:15 102

18:30 0 0 25 0 2 0 0 27 0 0 63 0 3 0 0 66 18:30 93

18:45 0 0 19 0 2 0 0 21 0 0 43 0 2 0 0 45 18:45 66

Totals 1 5 325 1 38 1 0 370 0 4 871 3 111 8 0 997 Totals 1367

FORM SF-224a SPECIAL ISSUE 3 Page 2 of 4 TRAFFIC SURVEY - JUNCTION (CLASSIFIED) 1100 to 1400

Road No B1000 Location Welwyn Road j/w Thieves Lane, Hertford. Hertfordshire Day & Date Tuesday 24th May 2011 Job No. 11-052 Grid Ref. 59 Highways Weather & comments Fine

LEFT STRAIGHT ON INTO Thieves Lane TO Welwyn Road westbound INTO T O FROM Welwyn Road FROM Welwyn Road FROM T HCV HCV HCV A HOUR P/C M/C CARS PSV LCV <3 TON >3 TON TOTAL P/C M/C CARS PSV LCV <3 TON >3 TON TOTAL P/C M/C CARS PSV LCV <3 TON >3 TON TOTAL HOUR L CHEVRON excl P/C CHEVRON excl P/C CHEVRON excl P/C 07:00 0 0 31 0 7 0 0 38 1 1 35 1 5 1 0 43 07:00 81

07:15 0 0 43 1 13 0 1 58 2 1 45 1 9 0 0 56 07:15 114

07:30 0 2 77 0 5 1 1 86 0 2 76 3 10 0 0 91 07:30 177

07:45 0 2 80 0 9 4 1 96 0 0 111 0 11 0 0 122 07:45 218

08:00 0 2 85 1 3 0 1 92 1 0 89 1 10 1 0 101 08:00 193

08:15 0 1 100 0 11 1 0 113 1 1 94 0 11 2 0 108 08:15 221

08:30 0 0 87 2 10 2 0 101 0 0 73 0 4 0 1 78 08:30 179

08:45 0 0 79 0 5 0 0 84 0 0 49 4 3 0 0 56 08:45 140

09:00 0 0 72 2 8 2 1 85 0 1 46 1 4 2 0 54 09:00 139

09:15 0 1 42 0 4 4 0 51 0 0 37 0 4 1 0 42 09:15 93

09:30 0 1 39 2 4 0 0 46 0 1 33 1 3 0 0 38 09:30 84

09:45 0 0 39 0 3 2 0 44 0 0 41 0 4 1 0 46 09:45 90

Totals 0 9 774 8 82 16 5 894 5 7 729 12 78 8 1 835 Totals 1729

T LEFT STRAIGHT ON O INTO Thieves Lane TO Welwyn Road westbound INTO T A FROM Welwyn Road FROM Welwyn Road FROM L 12:00 1 0 33 0 3 0 0 36 0 0 31 0 8 0 0 39 12:00 75

12:15 1 0 29 1 1 1 0 32 1 0 23 0 7 1 0 31 12:15 63

12:30 2 0 25 1 5 1 0 32 0 0 33 1 4 1 0 39 12:30 71

12:45 0 0 30 0 7 0 1 38 0 0 22 1 2 1 0 26 12:45 64

13:00 0 0 29 0 5 0 0 34 0 0 18 0 6 0 1 25 13:00 59

13:15 0 0 21 0 5 1 0 27 0 1 27 0 4 0 1 33 13:15 60

13:30 0 0 19 1 4 1 0 25 0 1 33 1 6 0 0 41 13:30 66

13:45 0 0 28 0 1 0 1 30 0 0 18 0 6 0 0 24 13:45 54

Totals 4 0 214 3 31 4 2 254 1 2 205 3 43 3 2 258 Totals 512

T LEFT STRAIGHT ON O INTO Thieves Lane TO Welwyn Road westbound INTO T A FROM Welwyn Road FROM Welwyn Road FROM L 16:00 0 0 25 1 4 1 0 31 0 0 39 0 6 0 0 45 16:00 76

16:15 0 0 37 3 7 0 1 48 0 0 27 1 6 0 0 34 16:15 82

16:30 0 0 33 0 2 1 0 36 0 1 38 1 6 1 0 47 16:30 83

16:45 0 0 31 0 3 0 0 34 0 0 47 0 9 0 0 56 16:45 90

17:00 0 1 34 2 5 1 0 43 0 2 40 0 3 0 0 45 17:00 88

17:15 0 0 34 0 2 0 0 36 0 0 44 0 6 0 0 50 17:15 86

17:30 0 0 41 0 4 0 0 45 0 0 42 0 5 0 0 47 17:30 92

17:45 0 1 37 0 2 0 0 40 0 2 38 0 1 0 0 41 17:45 81

18:00 0 1 44 1 2 1 0 49 0 0 34 1 6 0 0 41 18:00 90

18:15 0 0 34 1 0 0 0 35 0 0 31 0 4 0 0 35 18:15 70

18:30 1 0 37 0 4 0 0 41 0 1 28 0 3 0 0 32 18:30 73

18:45 0 0 17 1 4 0 0 22 0 0 27 0 1 0 0 28 18:45 50

Totals 1 3 404 9 39 4 1 460 0 6 435 3 56 1 0 501 Totals 961

FORM SF-224a SPECIAL ISSUE 3 Page 3 of 4

Appendix: I ASSIGNMENT MODEL

Page I-9

Welwyn Road Roundabout

3% 103 141 3% 38 Welwyn Road W Welwyn Road E 155 101 2% 92 2%

54 51 2% 16%

2% 130 1 Turpin Close DEVELOPMENT SITE 63 1 4 2

132

63 6%

Thieves Lane

1% 0% 0% 85 4 28

4% 28 3% 208 0% 11 A414 West A414 East 26 4% 367 2% 13 0%

6 9 21 0% 22% 0%

Hertingfordbury Rd Key:

100 Total no. of vehicles 10% Percentage HGVs (inc PSVs)

FIGURE T1 BASELINE SURVEYS AM PEAK 08:00-08:15 Welwyn Road Roundabout

7% 58 84 4% 26 Welwyn Road W Welwyn Road E 166 108 2% 113 2%

58 37 0% 8%

2% 139 0.8 Turpin Close DEVELOPMENT SITE 64 1 4 2

141

64 3%

Thieves Lane

0% 0% 0% 98 15 27

0% 20 4% 211 0% 9 A414 West A414 East 38 5% 312 2% 25 0%

2 6 20 0% 0% 5%

Hertingfordbury Rd Key:

100 Total no. of vehicles 10% Percentage HGVs (inc PSVs)

FIGURE T2 BASELINE SURVEYS AM PEAK 08:15-08:30 Welwyn Road Roundabout

7% 54 86 0% 32 Welwyn Road W Welwyn Road E 152 78 1% 101 1%

74 47 3% 2%

1% 133 1 Turpin Close DEVELOPMENT SITE 72 1 4 2

135

72 0%

Thieves Lane

0% 0% 6% 131 38 35

0% 19 6% 176 0% 18 A414 West A414 East 44 0% 308 3% 18 0%

5 9 27 0% 0% 0%

Hertingfordbury Rd Key:

100 Total no. of vehicles 10% Percentage HGVs (inc PSVs)

FIGURE T3 BASELINE SURVEYS AM PEAK 08:30-08:45 Welwyn Road Roundabout

0% 54 74 0% 20 Welwyn Road W Welwyn Road E 121 56 7% 84 7%

65 46 0% 7%

6% 104 1 Turpin Close DEVELOPMENT SITE 68 1 4 2

106

68 1%

Thieves Lane

0% 0% 0% 94 20 22

7% 15 3% 181 0% 8 A414 West A414 East 44 0% 331 4% 12 0%

7 9 32 0% 0% 0%

Hertingfordbury Rd Key:

100 Total no. of vehicles 10% Percentage HGVs (inc PSVs)

FIGURE T4 BASELINE SURVEYS AM PEAK 08:45-09:00 Welwyn Road Roundabout

4% 269 385 2% 116 Welwyn Road W Welwyn Road E 594 343 3% 390 3%

251 181 1% 8%

3% 506 3 Turpin Close DEVELOPMENT SITE 267 2 16 9

515

267 2%

Thieves Lane

0% 0% 2% 408 77 112

2% 82 4% 776 0% 46 A414 West A414 East 152 2% 1318 3% 68 0%

20 33 100 0% 0% 0%

Hertingfordbury Rd Key:

100 Total no. of vehicles 10% Percentage HGVs (inc PSVs)

FIGURE T5 BASELINE SURVEYS AM PEAK 08:00-09:00 Welwyn Road Roundabout

70% 21 3 30% 23% 13 Welwyn Road W 25% 3 Welwyn Road E 14 7 6 30 9 75% 12 77% 16% 85% 16 42 25% 75%

Dwellings 80 Trips In Out 24 AM 12 36 PM 36 12 58 DEVELOPMENT SITE

Trip Rate In Out AM 0.15 0.45 50% PM 0.45 0.15 62% 56 15 9 38% 34 Dwellings 200

Trips 15 2 In Out 50% AM 30 90 PM 90 30 Thieves Lane

68% 13% 19% 30 6 8

31% 5

A414 West A414 East 10 57%

2 12%

Hertingfordbury Rd

FIGURE T6 PROPOSED DEVELOPMENT TRAFFIC AM PEAK Welwyn Road Roundabout

70% 5 1 30% 23% 3 Welwyn Road W 25% 1 Welwyn Road E 3 2 1 8 2 75% 3 77% 16% 85% 4 10 25% 75%

Dwellings 80 Trips In Out 6 AM 3 9 PM 9 3 14 DEVELOPMENT SITE

Trip Rate In Out AM 0.04 0.11 50% PM 0.11 0.04 62% 14 4 2 38% 9 Dwellings 200

Trips 4 1 In Out 50% AM 8 23 PM 23 8 Thieves Lane

68% 13% 19% 7 1 2

31% 1

A414 West A414 East 2 57%

1 12%

Hertingfordbury Rd

FIGURE T7 PROPOSED DEVELOPMENT TRAFFIC AM PEAK - 15 MINUTE INTERVAL Welwyn Road Roundabout

3% 108 142 3% 41 Welwyn Road W 1 Welwyn Road E 158 103 2% 1 8 2 95 2%

58 61 2% 16%

2% 136 1 Turpin Close DEVELOPMENT SITE 77 1 4 2

135

64 6%

Thieves Lane

1% 0% 0% 92 5 30

4% 29 3% 208 0% 11 A414 West A414 East 28 4% 367 2% 13 0%

6 10 21 0% 22% 0%

Hertingfordbury Rd Key:

100 Total no. of vehicles 10% Percentage HGVs (inc PSVs)

FIGURE T8 BASELINE + DEVELOPMENT AM PEAK 08:00-08:15 Welwyn Road Roundabout

7% 63 85 4%29 Welwyn Road W 1 Welwyn Road E 169 110 2% 1 8 2 116 2%

62 47 0% 8%

2% 145 Turpin Close DEVELOPMENT SITE 78 1 4 2

14 4144 9

4 65 3%

Thieves Lane

0% 0% 0% 105 16 29

0% 21 4% 211 0% 9 A414 West A414 East 40 5% 312 2% 25 0%

2 7 20 0% 0% 5%

Hertingfordbury Rd Key:

100 Total no. of vehicles 10% Percentage HGVs (inc PSVs)

FIGURE T9 BASELINE + DEVELOPMENT AM PEAK 08:15-08:30 Welwyn Road Roundabout

7% 59 87 0%35 Welwyn Road W 1 Welwyn Road E 155 80 1% 1 8 2 104 1%

78 57 3% 2%

1% 139 1 Turpin Close DEVELOPMENT SITE 86 1 4 2

14 4138 9

4 73 0%

Thieves Lane

0% 0% 6% 138 39 37

0% 20 6% 176 0% 18 A414 West A414 East 46 0% 308 3% 18 0%

5 10 27 0% 0% 0%

Hertingfordbury Rd Key:

100 Total no. of vehicles 10% Percentage HGVs (inc PSVs)

FIGURE T10 BASELINE + DEVELOPMENT AM PEAK 08:30-08:45 Welwyn Road Roundabout

0% 59 75 0%23 Welwyn Road W 1 0 Welwyn Road E 124 58 7% 1 8 2 87 7%

69 56 0% 7%

0 110 Turpin Close DEVELOPMENT SITE 82 1 4 2

1 14 4109 9

4 69 2%

Thieves Lane

0% 0% 0% 101 21 24

7% 16 3% 181 0% 8 A414 West A414 East 46 0% 331 4% 12 0%

7 10 32 0% 0% 0%

Hertingfordbury Rd Key:

100 Total no. of vehicles 10% Percentage HGVs (inc PSVs)

FIGURE T11 BASELINE + DEVELOPMENT AM PEAK 08:45-09:00 Welwyn Road Roundabout

4% 290 388 2%129 Welwyn Road W 3 Welwyn Road E 608 350 3% 6 30 9 402 3%

267 223 1% 8%

3% 530 3 Turpin Close DEVELOPMENT SITE 325 2 16 9

56 15 524 34

15 269 3%

Thieves Lane

0% 0% 2% 438 83 120

2% 87 4% 776 0% 46 A414 West A414 East 162 2% 1318 3% 68 0%

20 35 100 0% 6% 1%

Hertingfordbury Rd Key:

100 Total no. of vehicles 10% Percentage HGVs (inc PSVs)

FIGURE T12 BASELINE + DEVELOPMENT AM PEAK 08:00-09:00 Welwyn Road Roundabout

3% 144 166 0% 22 Welwyn Road W Welwyn Road E 90 45 0% 43 0%

45 118 0% 1%

0% 65 5 Turpin Close DEVELOPMENT SITE 144 2 1 1

66

144 1%

Thieves Lane

6% 0% 0% 35 5 9

0% 80 3% 226 0% 4 A414 West A414 East 56 4% 197 2% 8 0%

5 8 23 0% 0% 0%

Hertingfordbury Rd Key:

100 Total no. of vehicles 10% Percentage HGVs (inc PSVs)

FIGURE T13 BASELINE SURVEYS PM PEAK 17:00-17:15 Welwyn Road Roundabout

3% 134 150 0% 16 Welwyn Road W Welwyn Road E 73 50 0% 36 0%

23 93 0% 2%

0% 52 5 Turpin Close DEVELOPMENT SITE 175 2 1 1

53

175 2%

Thieves Lane

0% 0% 0% 38 6 18

1% 95 2% 236 0% 8 A414 West A414 East 70 4% 162 2% 12 0%

4 10 20 0% 0% 0%

Hertingfordbury Rd Key:

100 Total no. of vehicles 10% Percentage HGVs (inc PSVs)

FIGURE T14 BASELINE SURVEYS PM PEAK 17:15-17:30 Welwyn Road Roundabout

3% 82 97 0% 15 Welwyn Road W Welwyn Road E 88 47 0% 45 0%

41 117 0% 3%

0% 60 5 Turpin Close DEVELOPMENT SITE 166 2 1 1

61

166 1%

Thieves Lane

0% 0% 0% 35 5 22

0% 103 1% 236 7% 14 A414 West A414 East 54 4% 170 2% 11 0%

2 9 20 0% 0% 0%

Hertingfordbury Rd Key:

100 Total no. of vehicles 10% Percentage HGVs (inc PSVs)

FIGURE T15 BASELINE SURVEYS PM PEAK 17:30-17:45 Welwyn Road Roundabout

3% 120 161 2% 41 Welwyn Road W Welwyn Road E 76 41 0% 40 0%

35 91 3% 0%

1% 81 5 Turpin Close DEVELOPMENT SITE 175 2 1 1

82

175 2%

Thieves Lane

0% 0% 0% 34 3 21

0% 91 3% 230 0% 8 A414 West A414 East 69 4% 192 2% 16 0%

3 15 25 0% 0% 0%

Hertingfordbury Rd Key:

100 Total no. of vehicles 10% Percentage HGVs (inc PSVs)

FIGURE T16 BASELINE SURVEYS PM PEAK 17:45-18:00 Welwyn Road Roundabout

3% 480 574 1% 94 Welwyn Road W Welwyn Road E 327 183 0% 164 0%

144 419 1% 1%

0% 258 19 Turpin Close DEVELOPMENT SITE 660 9 3 2

260

660 2%

Thieves Lane

1% 0% 0% 142 19 70

0% 369 2% 928 3% 34 A414 West A414 East 249 4% 721 2% 47 0%

14 42 88 0% 0% 0%

Hertingfordbury Rd Key:

100 Total no. of vehicles 10% Percentage HGVs (inc PSVs)

FIGURE T17 BASELINE SURVEYS PM PEAK 17:00-18:00 Welwyn Road Roundabout

84% 8 21 16% 37% 22 Welwyn Road W 16% 6 Welwyn Road E 4 19 3 9 30 85% 35 63% 25% 75% 15 11 25% 75%

Dwellings 80 Trips In Out 57 AM 12 36 PM 36 12 26 DEVELOPMENT SITE

Trip Rate In Out AM 0.15 0.45 62% PM 0.45 0.15 50% 15 56 1 50% 15 Dwellings 200

Trips 34 11 In Out 38% AM 30 90 PM 90 30 Thieves Lane

62% 8% 30% 10 1 5

56% 25

A414 West A414 East 17 38%

3 6%

Hertingfordbury Rd

FIGURE T18 PROPOSED DEVELOPMENT TRAFFIC PM PEAK Welwyn Road Roundabout

84% 2 5 16% 37% 6 Welwyn Road W 16% 1 Welwyn Road E 1 5 1 2 8 85% 9 63% 25% 75% 4 3 25% 75%

Dwellings 80 Trips In Out 14 AM 12 36 PM 36 12 7 DEVELOPMENT SITE

Trip Rate In Out AM 0.15 0.45 62% PM 0.45 0.15 50% 4 14 50% 4 Dwellings 200

Trips 9 3 In Out 38% AM 30 90 PM 90 30 Thieves Lane

62% 8% 30% 3 0 1

56% 6

A414 West A414 East 4 38%

1 6%

Hertingfordbury Rd

FIGURE T19 PROPOSED DEVELOPMENT TRAFFIC PM PEAK 15MIN INTERVALS Welwyn Road Roundabout

3% 146 171 0%28 Welwyn Road W 1 Welwyn Road E 91 50 0% 1 2 8 52 0%

49 121 0% 1%

0% 79 5 Turpin Close DEVELOPMENT SITE 151 2 1 1

4 14 66 4

9 147 1%

Thieves Lane

6% 0% 0% 38 5 10

0% 86 3% 226 0% 4 A414 West A414 East 60 4% 197 2% 8 0%

5 9 23 0% 0% 0%

Hertingfordbury Rd Key:

100 Total no. of vehicles 10% Percentage HGVs (inc PSVs)

FIGURE T20 BASELINE + DEVELOPMENT PM PEAK 17:00-17:15 Welwyn Road Roundabout

3% 136 155 0%22 Welwyn Road W 1 Welwyn Road E 74 55 0% 1 2 8 45 0%

27 96 0% 2%

0% 66 5 Turpin Close DEVELOPMENT SITE 182 2 1 1

4 14 53 4

9 178 2%

Thieves Lane

0% 0% 0% 41 6 19

1% 101 2% 236 0% 8 A414 West A414 East 74 4% 162 2% 12 0%

4 11 20 0% 0% 0%

Hertingfordbury Rd Key:

100 Total no. of vehicles 10% Percentage HGVs (inc PSVs)

FIGURE T21 BASE + DEVELOPMENT PM PEAK 17:15-17:30 Welwyn Road Roundabout

3% 84 102 0%21 Welwyn Road W 1 Welwyn Road E 89 52 0% 1 2 8 54 0%

45 120 0% 3%

0% 74 5 Turpin Close DEVELOPMENT SITE 173 2 1 1

4 14 61 4

9 169 1%

Thieves Lane

0% 0% 0% 38 5 23

0% 109 1% 236 7% 14 A414 West A414 East 58 4% 170 2% 11 0%

2 10 20 0% 0% 0%

Hertingfordbury Rd Key:

100 Total no. of vehicles 10% Percentage HGVs (inc PSVs)

FIGURE T22 BASE + DEVELOPMENT PM PEAK 17:30-17:45 Welwyn Road Roundabout

3% 122 166 2%47 Welwyn Road W 1 Welwyn Road E 77 46 0% 1 2 8 49 0%

39 94 3% 0%

1% 95 5 Turpin Close DEVELOPMENT SITE 182 2 1 1

4 14 82 4

178 2%

Thieves Lane

0% 0% 0% 37 3 22

0% 97 3% 230 0% 8 A414 West A414 East 73 4% 192 2% 16 0%

3 16 25 0% 0% 0%

Hertingfordbury Rd Key:

100 Total no. of vehicles 10% Percentage HGVs (inc PSVs)

FIGURE T23 BASE + DEVELOPMENT PM PEAK 17:45-18:00 Welwyn Road Roundabout

3% 488 595 1%116 Welwyn Road W 6 Welwyn Road E 331 202 0% 3 9 30 199 0%

159 430 1% 1%

0% 315 19 Turpin Close DEVELOPMENT SITE 686 9 3 2

15 56 261 15

34 671 1%

Thieves Lane

1% 0% 0% 152 20 75 0

0% 394 2% 928 3% 34 A414 West A414 East 266 4% 721 2% 47 0%

14 45 88 0% 0% 0%

Hertingfordbury Rd Key:

100 Total no. of vehicles 10% Percentage HGVs (inc PSVs)

FIGURE T24 BASE + DEVELOPMENT PM PEAK 17:00-18:00

Appendix: J TRICS DATA

Page J-10

LIST OF SITES relevant to selection parameters 1 BD-03-A-01SEMI DETACHED, BEDFORDSHIRELUTON NEW BEDFORD ROAD

LUTON Suburban Area (PPS6 Out of Centre) Residential Zone Total Number of dwellings: 131 Survey date:THURSDAY 08/07/2004 Survey Type:MANUAL 2 BD-03-A-02SEMI DETACHED, BEDFORDSHIRELUTON RIDDY LANE

LUTON Suburban Area (PPS6 Out of Centre) Residential Zone Total Number of dwellings: 82 Survey date:TUESDAY 06/07/2004 Survey Type:MANUAL 3 CA-03-A-02MIXED HOUSES, PETERBOROUGHCAMBRIDGESHIRE THORPE ROAD

PETERBOROUGH Edge of Town Centre Residential Zone Total Number of dwellings: 363 Survey date:THURSDAY 13/05/2004 Survey Type:MANUAL 4 CA-03-A-04DETACHED, PETERBOROUGHCAMBRIDGESHIRE

THORPE PARK ROAD PETERBOROUGH Suburban Area (PPS6 Out of Centre) Residential Zone Total Number of dwellings: 9 Survey date:TUESDAY 18/10/2011 Survey Type:MANUAL 5 CB-03-A-03SEMI DETACHED, CUMBRIAWORKINGTON HAWKSHEAD AVENUE

WORKINGTON Edge of Town Residential Zone Total Number of dwellings: 40 Survey date:THURSDAY 20/11/2008 Survey Type:MANUAL 6 CB-03-A-04SEMI DETACHED, CUMBRIAWORKINGTON MOORCLOSE ROAD SALTERBACK WORKINGTON Edge of Town No Sub Category Total Number of dwellings: 82 Survey date:FRIDAY 24/04/2009 Survey Type:MANUAL 7 CH-03-A-05DETACHED, CREWECHESHIRE SYDNEY ROAD SYDNEY CREWE Edge of Town Residential Zone Total Number of dwellings: 17 Survey date:TUESDAY 14/10/2008 Survey Type:MANUAL 8 CH-03-A-06SEMI-DET./BUNGALOWS,CREWECHESHIRE CREWE ROAD

CREWE Suburban Area (PPS6 Out of Centre) No Sub Category Total Number of dwellings: 129 Survey date:TUESDAY 14/10/2008 Survey Type:MANUAL 9 CH-03-A-08DETACHED, CHESTERCHESHIRE WHITCHURCH ROAD BOUGHTON HEATH CHESTER Suburban Area (PPS6 Out of Centre) Residential Zone Total Number of dwellings: 11 Survey date:TUESDAY 22/05/2012 Survey Type:MANUAL 10 CW-03-A-01TERRACED, PENZANCECORNWALL ALVERTON ROAD

PENZANCE Suburban Area (PPS6 Out of Centre) Residential Zone Total Number of dwellings: 13 Survey date:THURSDAY 30/06/2005 Survey Type:MANUAL 11 CW-03-A-02SEMI D./DETATCHED,CORNWALL TRURO BOSVEAN GARDENS

TRURO Suburban Area (PPS6 Out of Centre) Residential Zone Total Number of dwellings: 73 Survey date:TUESDAY 18/09/2007 Survey Type:MANUAL 12 DS-03-A-01SEMI D./TERRACED,DERBYSHIRE DRONFIELD THE AVENUE HOLMESDALE DRONFIELD Neighbourhood Centre (PPS6 Local Centre) Residential Zone Total Number of dwellings: 20 Survey date:THURSDAY 22/06/2006 Survey Type:MANUAL 13 ES-03-A-02 PRIVATE HOUSING,PEACEHAVENEAST SUSSEX SOUTH COAST ROAD

PEACEHAVEN Edge of Town Residential Zone Total Number of dwellings: 37 Survey date:FRIDAY 18/11/2011 Survey Type:MANUAL 14 EX-03-A-01 SEMI-DET., STANFORD-LE-HOPEESSEX MILTON ROAD CORRINGHAM STANFORD-LE-HOPE Edge of Town Residential Zone Total Number of dwellings: 237 Survey date:TUESDAY 13/05/2008 Survey Type:MANUAL 15 GM-03-A-10DETACHED/SEMI,GREATER MANCHESTER MANCHESTER BUTT HILL DRIVE PRESTWICH MANCHESTER Edge of Town Residential Zone Total Number of dwellings: 29 Survey date:WEDNESDAY 12/10/2011 Survey Type:MANUAL 16 GS-03-A-01SEMI D./TERRACED,GLOUCESTERSHIRE GLOUCESTER KINGSHOLM ROAD KINGSHOLM GLOUCESTER Edge of Town Centre No Sub Category Total Number of dwellings: 73 Survey date:TUESDAY 25/05/2004 Survey Type:MANUAL 17 LC-03-A-22 BUNGALOWS, BLACKPOOLLANCASHIRE CLIFTON DRIVE NORTH

BLACKPOOL Edge of Town Residential Zone Total Number of dwellings: 98 Survey date:TUESDAY 18/10/2005 Survey Type:MANUAL 18 LC-03-A-29 DETACHED/SEMI LANCASHIRED., BLACKBURN REVIDGE ROAD FOUR LANE ENDS BLACKBURN Edge of Town Residential Zone Total Number of dwellings: 185 Survey date:THURSDAY 10/06/2004 Survey Type:MANUAL 19 LE-03-A-01 DETACHED, MELTONLEICESTERSHIRE MOWBRAY REDWOOD AVENUE

MELTON MOWBRAY Edge of Town Residential Zone Total Number of dwellings: 11 Survey date:TUESDAY 03/05/2005 Survey Type:MANUAL 20 LN-03-A-01MIXED HOUSES, LINCOLNLINCOLNSHIRE BRANT ROAD BRACEBRIDGE LINCOLN Edge of Town Residential Zone Total Number of dwellings: 150 Survey date:TUESDAY 15/05/2007 Survey Type:MANUAL 21 LN-03-A-02MIXED HOUSES, LINCOLNLINCOLNSHIRE HYKEHAM ROAD

LINCOLN Suburban Area (PPS6 Out of Centre) Residential Zone Total Number of dwellings: 186 Survey date:MONDAY 14/05/2007 Survey Type:MANUAL 22 LN-03-A-03SEMI DETACHED, LINCOLNSHIRELINCOLN ROOKERY LANE BOULTHAM LINCOLN Suburban Area (PPS6 Out of Centre) Residential Zone Total Number of dwellings: 22 Survey date:TUESDAY 18/09/2012 Survey Type:MANUAL 23 MS-03-A-01TERRACED, RUNCORNMERSEYSIDE PALACE FIELDS AVENUE

RUNCORN Neighbourhood Centre (PPS6 Local Centre) Residential Zone Total Number of dwellings: 372 Survey date:THURSDAY 06/10/2005 Survey Type:MANUAL 24 NT-03-A-03SEMI DETACHED,KIRKBY-IN-ASHFDNOTTINGHAMSHIRE B6018 SUTTON ROAD KIRKBY-IN-ASHFIELD Edge of Town Residential Zone Total Number of dwellings: 166 Survey date:WEDNESDAY 28/06/2006 Survey Type:MANUAL 25 NY-03-A-01MIXED HOUSES,NORTHALLERTONNORTH YORKSHIRE GRAMMAR SCHOOL LANE

NORTHALLERTON Suburban Area (PPS6 Out of Centre) Residential Zone Total Number of dwellings: 52 Survey date:TUESDAY 25/09/2007 Survey Type:MANUAL 26 NY-03-A-03PRIVATE HOUSING,NORTH BOROUGHBRIDGE YORKSHIRE NEW ROW

BOROUGHBRIDGE Edge of Town Centre Residential Zone Total Number of dwellings: 14 Survey date:MONDAY 15/09/2008 Survey Type:MANUAL 27 NY-03-A-05HOUSES AND FLATS,NORTH RIPON YORKSHIRE BOROUGHBRIDGE ROAD

RIPON Edge of Town No Sub Category Total Number of dwellings: 71 Survey date:MONDAY 22/09/2008 Survey Type:MANUAL 28 NY-03-A-06BUNGALOWS/SEMINORTH DET., YORKSHIREBBDGE HORSEFAIR

BOROUGHBRIDGE Suburban Area (PPS6 Out of Centre) Residential Zone Total Number of dwellings: 115 Survey date:FRIDAY 14/10/2011 Survey Type:MANUAL 29 SF-03-A-01 SEMI DETACHED, SUFFOLKIPSWICH A1156 FELIXSTOWE ROAD RACECOURSE IPSWICH Suburban Area (PPS6 Out of Centre) Residential Zone Total Number of dwellings: 77 Survey date:WEDNESDAY 23/05/2007 Survey Type:MANUAL 30 SF-03-A-02 SEMI DET./TERRACED,SUFFOLK IPSWICH STOKE PARK DRIVE MAIDENHALL IPSWICH Edge of Town Residential Zone Total Number of dwellings: 230 Survey date:THURSDAY 24/05/2007 Survey Type:MANUAL 31 SF-03-A-03 MIXED HOUSES, BURYSUFFOLK ST EDMDS BARTON HILL FORNHAM ST MARTIN BURY ST EDMUNDS Edge of Town Out of Town Total Number of dwellings: 101 Survey date:MONDAY 15/05/2006 Survey Type:MANUAL 32 SH-03-A-03DETATCHED, SHREWSBURYSHROPSHIRE SOMERBY DRIVE BICTON HEATH SHREWSBURY Edge of Town No Sub Category Total Number of dwellings: 10 Survey date:FRIDAY 26/06/2009 Survey Type:MANUAL 33 SH-03-A-04TERRACED, SHREWSBURYSHROPSHIRE ST MICHAEL'S STREET

SHREWSBURY Suburban Area (PPS6 Out of Centre) No Sub Category Total Number of dwellings: 108 Survey date:THURSDAY 11/06/2009 Survey Type:MANUAL 34 ST-03-A-05 TERRACED/DETACHED,STAFFORDSHIRE STOKE WATERMEET GROVE ETRURIA STOKE-ON-TRENT Suburban Area (PPS6 Out of Centre) Residential Zone Total Number of dwellings: 14 Survey date:WEDNESDAY 26/11/2008 Survey Type:MANUAL 35 TV-03-A-01MIXED HOUSES/FLATS,TEES VALLEY HARTLEPL POWLETT ROAD

HARTLEPOOL Suburban Area (PPS6 Out of Centre) No Sub Category Total Number of dwellings: 225 Survey date:THURSDAY 14/04/2005 Survey Type:MANUAL 36 WL-03-A-01SEMI D./TERRACEDWILTSHIRE W. BASSETT MAPLE DRIVE

WOOTTON BASSETT Edge of Town Residential Zone Total Number of dwellings: 99 Survey date:MONDAY 02/10/2006 Survey Type:MANUAL 37 WM-03-A-01TERRACED, COVENTRYWEST MIDLANDS FOLESHILL ROAD FOLESHILL COVENTRY Suburban Area (PPS6 Out of Centre) Residential Zone Total Number of dwellings: 79 Survey date:FRIDAY 03/02/2006 Survey Type:MANUAL 38 WM-03-A-02DETACHED/SEMI WESTD., STRBRIDGE MIDLANDS HEATH STREET

STOURBRIDGE Suburban Area (PPS6 Out of Centre) Residential Zone Total Number of dwellings: 12 Survey date:WEDNESDAY 26/04/2006 Survey Type:MANUAL 39 WM-03-A-03MIXED HOUSING,WEST COVENTRY MIDLANDS BASELEY WAY ROWLEYS GREEN COVENTRY Edge of Town Residential Zone Total Number of dwellings: 84 Survey date:MONDAY 24/09/2007 Survey Type:MANUAL 40 WO-03-A-01DETACHED, BROMSGROVEWORCESTERSHIRE MARLBOROUGH AVENUE ASTON FIELDS BROMSGROVE Suburban Area (PPS6 Out of Centre) Residential Zone Total Number of dwellings: 10 Survey date:THURSDAY 23/06/2005 Survey Type:MANUAL 41 WO-03-A-02SEMI DETACHED, WORCESTERSHIREREDDITCH MEADOWHILL ROAD

REDDITCH Edge of Town No Sub Category Total Number of dwellings: 48 Survey date:TUESDAY 02/05/2006 Survey Type:MANUAL 42 WO-03-A-03DETACHED, KIDDERMINSTERWORCESTERSHIRE BLAKEBROOK BLAKEBROOK KIDDERMINSTER Suburban Area (PPS6 Out of Centre) Residential Zone Total Number of dwellings: 138 Survey date:FRIDAY 05/05/2006 Survey Type:MANUAL 43 WO-03-A-06DET./TERRACED, BROMSGROVEWORCESTERSHIRE ST GODWALDS ROAD ASTON FIELDS BROMSGROVE Edge of Town No Sub Category Total Number of dwellings: 232 Survey date:THURSDAY 30/06/2005 Survey Type:MANUAL TRIP RATE for Land Use 03 - RESIDENTIAL/A - HOUSES PRIVATELY OWNED Calculation Factor: 1 DWELLS Count Type: VEHICLES

ARRIVALS DEPARTURES TOTALS No. Ave. Trip No. Ave. Trip No. Ave. Trip Time Range Days DWELLS Rate Days DWELLS Rate Days DWELLS Rate 00:00-01:00 01:00-02:00 02:00-03:00 03:00-04:00 04:00-05:00 05:00-06:00 06:00-07:00 07:00-08:00 43 99 0.073 43 99 0.265 43 99 0.338 08:00-09:00 43 99 0.16 43 99 0.406 43 99 0.566 09:00-10:00 43 99 0.178 43 99 0.213 43 99 0.391 10:00-11:00 43 99 0.152 43 99 0.19 43 99 0.342 11:00-12:00 43 99 0.19 43 99 0.179 43 99 0.369 12:00-13:00 43 99 0.202 43 99 0.183 43 99 0.385 13:00-14:00 43 99 0.183 43 99 0.177 43 99 0.36 14:00-15:00 43 99 0.193 43 99 0.196 43 99 0.389 15:00-16:00 43 99 0.282 43 99 0.217 43 99 0.499 16:00-17:00 43 99 0.322 43 99 0.196 43 99 0.518 17:00-18:00 43 99 0.381 43 99 0.228 43 99 0.609 18:00-19:00 43 99 0.272 43 99 0.221 43 99 0.493 19:00-20:00 20:00-21:00 21:00-22:00 22:00-23:00 23:00-24:00 Daily Trip Rates: 2.588 2.671 5.259

Appendix: K ARCADY RESULTS

Page K-11

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______A R C A D Y 6 ______

ASSESSMENT OF ROUNDABOUT CAPACITY AND DELAY

Analysis Program: Release 7.0 (FEBRUARY 2010)

(c) Copyright TRL Limited, 2010

Adapted from ARCADY/3 which is Crown Copyright by permission of the controller of HMSO ______

For sales and distribution information, program advice and maintenance, contact:

TRL Limited Tel: +44 (0) 1344 770758 Crowthorne House Fax: +44 (0) 1344 770356 Nine Mile Ride Email: [email protected] Wokingham, Berks. Web: www.trlsoftware.co.uk RG40 3GA,UK

------THE USER OF THIS COMPUTER PROGRAM FOR THE SOLUTION OF AN ENGINEERING PROBLEM IS IN NO WAY RELIEVED OF THEIR RESPONSIBILITY FOR THE CORRECTNESS OF THE SOLUTION ------

Run with file:- "z:\EAS\Current Projects\Hertford Thieves Lane\Analysis\ARCADY\ A414 Thieves Lane RBT Existing Flows 2012 Direct Input & HGV.vai" (drive-on-the-left ) at 17:13:24 on Wednesday, 12 December 2012

FILE PROPERTIES ***************

RUN TITLE: A414 Thieves Lane RBT Existing Flows 2012 LOCATION: A414 WITH THIEVES LANE DATE: 10/12/12 CLIENT: CROUDACE ENUMERATOR: EAS [EAS-PC] JOB NUMBER: 334 STATUS: DESCRIPTION:

INPUT DATA ********** ARM A - HERTINGFORDBURY ROAD ARM B - A414 WEST ARM C - THIEVES LANE ARM D - A414 EAST

GEOMETRIC DATA ------

------T5 I ARM I V (M) I E (M) I L (M) I R (M) I D (M) I PHI (DEG) I SLOPE I INTERCEPT (PCU/MIN) I ------I ARM A I 3.20 I 7.70 I 18.30 I 62.00 I 61.00 I 23.0 I 0.589 I 30.536 I I ARM B I 7.30 I 8.60 I 5.00 I 45.00 I 61.00 I 30.0 I 0.695 I 41.547 I I ARM C I 3.60 I 7.36 I 12.80 I 15.50 I 61.00 I 50.0 I 0.502 I 25.630 I I ARM D I 6.71 I 6.71 I 0.00 I 36.50 I 61.00 I 34.0 I 0.614 I 34.164 I ------

V = approach half-width L = effective flare length D = inscribed circle diameter E = entry width R = entry radius PHI = entry angle

TRAFFIC DEMAND DATA ------

Only sets included in the current run are shown

SCALING FACTORS

------T13 IARM I FLOW SCALE(%) I ------I A I 100 I I B I 100 I I C I 100 I I D I 100 I ------

TIME PERIOD BEGINS(08.00)AND ENDS(09.00)

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LENGTH OF TIME PERIOD -( 60) MINUTES

LENGTH OF TIME SEGMENT - (15) MINUTES

DEMAND FLOW PROFILES ARE INPUT DIRECTLY.

DEMAND SET TITLE: EXISTING 2012

DEMAND SET TITLE: EXISTING 2012

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------T33 I I TURNING PROPORTIONS I I I TURNING COUNTS I I I (PERCENTAGE OF H.V.S) I I ------I TIME I FROM/T I ARM A I ARM B I ARM C I ARM D I ------I 08.00 - 08.15 I I I I I I I I ARM A I 0.000 I 0.167 I 0.250 I 0.583 I I I I 0.0 I 6.0 I 9.0 I 21.0 I I I I ( 0.0)I ( 0.0)I ( 6.0)I ( 1.0)I I I I I I I I I I ARM B I 0.045 I 0.000 I 0.113 I 0.842 I I I I 11.0 I 0.0 I 28.0 I 208.0 I I I I ( 0.0)I ( 0.0)I ( 2.4)I ( 4.1)I I I I I I I I I I ARM C I 0.034 I 0.726 I 0.000 I 0.239 I I I I 4.0 I 85.0 I 0.0 I 28.0 I I I I ( 0.0)I ( 0.2)I ( 0.0)I ( 1.8)I I I I I I I I I I ARM D I 0.032 I 0.904 I 0.064 I 0.000 I I I I 13.0 I 367.0 I 26.0 I 0.0 I I I I ( 0.0)I ( 2.6)I ( 2.0)I ( 0.0)I I I I I I I I ------I 08.15 - 08.30 I I I I I I I I ARM A I 0.000 I 0.071 I 0.214 I 0.714 I I I I 0.0 I 2.0 I 6.0 I 20.0 I I I I ( 0.0)I ( 0.0)I ( 6.0)I ( 1.0)I I I I I I I I I I ARM B I 0.038 I 0.000 I 0.083 I 0.879 I I I I 9.0 I 0.0 I 20.0 I 211.0 I I I I ( 0.0)I ( 0.0)I ( 2.4)I ( 4.1)I I I I I I I I I I ARM C I 0.107 I 0.700 I 0.000 I 0.193 I I I I 15.0 I 98.0 I 0.0 I 27.0 I I I I ( 0.0)I ( 0.2)I ( 0.0)I ( 1.8)I I I I I I I I I I ARM D I 0.067 I 0.832 I 0.101 I 0.000 I I I I 25.0 I 312.0 I 38.0 I 0.0 I I I I ( 0.0)I ( 2.6)I ( 2.0)I ( 0.0)I I I I I I I I ------I 08.30 - 08.45 I I I I I I I I ARM A I 0.000 I 0.122 I 0.220 I 0.659 I I I I 0.0 I 5.0 I 9.0 I 27.0 I I I I ( 0.0)I ( 0.0)I ( 6.0)I ( 1.0)I I I I I I I I I I ARM B I 0.085 I 0.000 I 0.089 I 0.826 I I I I 18.0 I 0.0 I 19.0 I 176.0 I I I I ( 0.0)I ( 0.0)I ( 2.4)I ( 4.1)I I I I I I I I I I ARM C I 0.186 I 0.642 I 0.000 I 0.172 I I I I 38.0 I 131.0 I 0.0 I 35.0 I I I I ( 0.0)I ( 0.2)I ( 0.0)I ( 1.8)I I I I I I I I I I ARM D I 0.049 I 0.832 I 0.119 I 0.000 I I I I 18.0 I 308.0 I 44.0 I 0.0 I I I I ( 0.0)I ( 2.6)I ( 2.0)I ( 0.0)I I I I I I I I ------I 08.45 - 09.00 I I I I I I I I ARM A I 0.000 I 0.146 I 0.188 I 0.667 I I I I 0.0 I 7.0 I 9.0 I 32.0 I I I I ( 0.0)I ( 0.0)I ( 6.0)I ( 1.0)I I I I I I I I I I ARM B I 0.039 I 0.000 I 0.074 I 0.887 I I I I 8.0 I 0.0 I 15.0 I 181.0 I I I I ( 0.0)I ( 0.0)I ( 2.4)I ( 4.1)I I I I I I I I I I ARM C I 0.147 I 0.691 I 0.000 I 0.162 I I I I 20.0 I 94.0 I 0.0 I 22.0 I I I I ( 0.0)I ( 0.2)I ( 0.0)I ( 1.8)I I I I I I I I I I ARM D I 0.031 I 0.855 I 0.114 I 0.000 I I I I 12.0 I 331.0 I 44.0 I 0.0 I I I I ( 0.0)I ( 2.6)I ( 2.0)I ( 0.0)I I I I I I I I ------

QUEUE AND DELAY INFORMATION FOR EACH 15 MIN TIME SEGMENT ------

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------T70 I TIME DEMAND CAPACITY DEMAND/ PEDESTRIAN START END DELAY GEOMETRIC DELAY AVERAGE DELAY I I (VEH/MIN) (VEH/MIN) CAPACITY FLOW QUEUE QUEUE (VEH.MIN/ (VEH.MIN/ PER ARRIVING I I (RFC) (PEDS/MIN) (VEHS) (VEHS) TIME SEGMENT) TIME SEGMENT) VEHICLE (MIN) I - - I 08.00-08.15 I I ARM A 2.40 11.50 0.209 - - - 0.0 0.3 3.8 - 0.110 I I ARM B 16.47 37.54 0.439 - - - 0.0 0.8 11.4 - 0.047 I I ARM C 7.80 17.23 0.453 - - - 0.0 0.8 11.7 - 0.105 I I ARM D 27.07 29.37 0.922 - - - 0.0 9.1 108.2 - 0.300 I I I ------

------I TIME DEMAND CAPACITY DEMAND/ PEDESTRIAN START END DELAY GEOMETRIC DELAY AVERAGE DELAY I I (VEH/MIN) (VEH/MIN) CAPACITY FLOW QUEUE QUEUE (VEH.MIN/ (VEH.MIN/ PER ARRIVING I I (RFC) (PEDS/MIN) (VEHS) (VEHS) TIME SEGMENT) TIME SEGMENT) VEHICLE (MIN) I - - I 08.15-08.30 I I ARM A 1.87 12.29 0.152 - - - 0.3 0.2 2.8 - 0.096 I I ARM B 16.00 37.12 0.431 - - - 0.8 0.8 11.5 - 0.047 I I ARM C 9.33 17.22 0.542 - - - 0.8 1.2 16.8 - 0.126 I I ARM D 25.00 28.50 0.877 - - - 9.1 7.8 123.8 - 0.302 I I I ------

------I TIME DEMAND CAPACITY DEMAND/ PEDESTRIAN START END DELAY GEOMETRIC DELAY AVERAGE DELAY I I (VEH/MIN) (VEH/MIN) CAPACITY FLOW QUEUE QUEUE (VEH.MIN/ (VEH.MIN/ PER ARRIVING I I (RFC) (PEDS/MIN) (VEHS) (VEHS) TIME SEGMENT) TIME SEGMENT) VEHICLE (MIN) I - - I 08.30-08.45 I I ARM A 2.73 11.21 0.243 - - - 0.2 0.3 4.6 - 0.118 I I ARM B 14.20 36.49 0.389 - - - 0.8 0.6 9.7 - 0.045 I I ARM C 13.60 17.91 0.760 - - - 1.2 3.0 40.5 - 0.221 I I ARM D 24.67 25.94 0.951 - - - 7.8 12.6 160.8 - 0.524 I I I ------

------I TIME DEMAND CAPACITY DEMAND/ PEDESTRIAN START END DELAY GEOMETRIC DELAY AVERAGE DELAY I I (VEH/MIN) (VEH/MIN) CAPACITY FLOW QUEUE QUEUE (VEH.MIN/ (VEH.MIN/ PER ARRIVING I I (RFC) (PEDS/MIN) (VEHS) (VEHS) TIME SEGMENT) TIME SEGMENT) VEHICLE (MIN) I - - I 08.45-09.00 I I ARM A 3.20 11.45 0.280 - - - 0.3 0.4 5.6 - 0.121 I I ARM B 13.60 36.15 0.376 - - - 0.6 0.6 9.2 - 0.044 I I ARM C 9.07 17.90 0.507 - - - 3.0 1.0 16.7 - 0.117 I I ARM D 25.80 28.40 0.908 - - - 12.6 11.3 176.3 - 0.419 I I I ------

QUEUE AT ARM A ------

TIME SEGMENT NO. OF ENDING VEHICLES IN QUEUE

08.15 0.3 08.30 0.2 08.45 0.3 09.00 0.4

QUEUE AT ARM B ------

TIME SEGMENT NO. OF ENDING VEHICLES IN QUEUE

08.15 0.8 * 08.30 0.8 * 08.45 0.6 * 09.00 0.6 *

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QUEUE AT ARM C ------

TIME SEGMENT NO. OF ENDING VEHICLES IN QUEUE

08.15 0.8 * 08.30 1.2 * 08.45 3.0 *** 09.00 1.0 *

QUEUE AT ARM D ------

TIME SEGMENT NO. OF ENDING VEHICLES IN QUEUE

08.15 9.1 ********* 08.30 7.8 ******** 08.45 12.6 ************* 09.00 11.3 ***********

QUEUEING DELAY INFORMATION OVER WHOLE PERIOD ------

------T75 I ARM I TOTAL DEMAND I * QUEUEING * I * INCLUSIVE QUEUEING * I I I I * DELAY * I * DELAY * I I I------I I I (VEH) (VEH/H) I (MIN) (MIN/VEH) I (MIN) (MIN/VEH) I ------I A I 153.0 I 153.0 I 16.8 I 0.11 I 16.8 I 0.11 I I B I 904.1 I 904.1 I 41.8 I 0.05 I 41.8 I 0.05 I I C I 597.0 I 597.0 I 85.7 I 0.14 I 85.7 I 0.14 I I D I 1538.1 I 1538.1 I 569.1 I 0.37 I 571.3 I 0.37 I ------I ALL I 3192.1 I 3192.1 I 713.4 I 0.22 I 715.6 I 0.22 I ------* DELAY IS THAT OCCURRING ONLY WITHIN THE TIME PERIOD. * INCLUSIVE DELAY INCLUDES DELAY SUFFERED BY VEHICLES WHICH ARE STILL QUEUEING AFTER THE END OF THE TIME PERIOD. * THESE WILL ONLY BE SIGNIFICANTLY DIFFERENT IF THERE IS A LARGE QUEUE REMAINING AT THE END OF THE TIME PERIOD.

END OF JOB

======end of file ======

Printed at 17:16:42 on 12/12/2012]

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______A R C A D Y 6 ______

ASSESSMENT OF ROUNDABOUT CAPACITY AND DELAY

Analysis Program: Release 7.0 (FEBRUARY 2010)

(c) Copyright TRL Limited, 2010

Adapted from ARCADY/3 which is Crown Copyright by permission of the controller of HMSO ______

For sales and distribution information, program advice and maintenance, contact:

TRL Limited Tel: +44 (0) 1344 770758 Crowthorne House Fax: +44 (0) 1344 770356 Nine Mile Ride Email: [email protected] Wokingham, Berks. Web: www.trlsoftware.co.uk RG40 3GA,UK

------THE USER OF THIS COMPUTER PROGRAM FOR THE SOLUTION OF AN ENGINEERING PROBLEM IS IN NO WAY RELIEVED OF THEIR RESPONSIBILITY FOR THE CORRECTNESS OF THE SOLUTION ------

Run with file:- "z:\EAS\Current Projects\Hertford Thieves Lane\Analysis\ARCADY\ A414 Thieves Lane RBT Existing Flows 2012 Direct Input & HGV.vai" (drive-on-the-left ) at 17:32:04 on Wednesday, 12 December 2012

FILE PROPERTIES ***************

RUN TITLE: A414 Thieves Lane RBT Existing Flows 2012 LOCATION: A414 WITH THIEVES LANE DATE: 10/12/12 CLIENT: CROUDACE ENUMERATOR: EAS [EAS-PC] JOB NUMBER: 334 STATUS: DESCRIPTION:

INPUT DATA ********** ARM A - HERTINGFORDBURY ROAD ARM B - A414 WEST ARM C - THIEVES LANE ARM D - A414 EAST

GEOMETRIC DATA ------

------T5 I ARM I V (M) I E (M) I L (M) I R (M) I D (M) I PHI (DEG) I SLOPE I INTERCEPT (PCU/MIN) I ------I ARM A I 3.20 I 7.70 I 18.30 I 62.00 I 61.00 I 23.0 I 0.589 I 30.536 I I ARM B I 7.30 I 8.60 I 5.00 I 45.00 I 61.00 I 30.0 I 0.695 I 41.547 I I ARM C I 3.60 I 7.36 I 12.80 I 15.50 I 61.00 I 50.0 I 0.502 I 25.630 I I ARM D I 6.71 I 6.71 I 0.00 I 36.50 I 61.00 I 34.0 I 0.614 I 34.164 I ------

V = approach half-width L = effective flare length D = inscribed circle diameter E = entry width R = entry radius PHI = entry angle

TRAFFIC DEMAND DATA ------

Only sets included in the current run are shown

SCALING FACTORS

------T13 IARM I FLOW SCALE(%) I ------I A I 100 I I B I 100 I I C I 100 I I D I 100 I ------

TIME PERIOD BEGINS(08.00)AND ENDS(09.00)

------

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LENGTH OF TIME PERIOD -( 60) MINUTES

LENGTH OF TIME SEGMENT - (15) MINUTES

DEMAND FLOW PROFILES ARE INPUT DIRECTLY.

DEMAND SET TITLE: EXISTING 2012

DEMAND SET TITLE: WITH DEV AM

DEMAND SET TITLE: EXISTING 2012

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------T33 I I TURNING PROPORTIONS I I I TURNING COUNTS I I I (PERCENTAGE OF H.V.S) I I ------I TIME I FROM/T I ARM A I ARM B I ARM C I ARM D I ------I 08.00 - 08.15 I I I I I I I I ARM A I 0.000 I 0.167 I 0.250 I 0.583 I I I I 0.0 I 6.0 I 9.0 I 21.0 I I I I ( 0.0)I ( 0.0)I ( 6.0)I ( 1.0)I I I I I I I I I I ARM B I 0.045 I 0.000 I 0.113 I 0.842 I I I I 11.0 I 0.0 I 28.0 I 208.0 I I I I ( 0.0)I ( 0.0)I ( 2.4)I ( 4.1)I I I I I I I I I I ARM C I 0.034 I 0.726 I 0.000 I 0.239 I I I I 4.0 I 85.0 I 0.0 I 28.0 I I I I ( 0.0)I ( 0.2)I ( 0.0)I ( 1.8)I I I I I I I I I I ARM D I 0.032 I 0.904 I 0.064 I 0.000 I I I I 13.0 I 367.0 I 26.0 I 0.0 I I I I ( 0.0)I ( 2.6)I ( 2.0)I ( 0.0)I I I I I I I I ------I 08.15 - 08.30 I I I I I I I I ARM A I 0.000 I 0.071 I 0.214 I 0.714 I I I I 0.0 I 2.0 I 6.0 I 20.0 I I I I ( 0.0)I ( 0.0)I ( 6.0)I ( 1.0)I I I I I I I I I I ARM B I 0.038 I 0.000 I 0.083 I 0.879 I I I I 9.0 I 0.0 I 20.0 I 211.0 I I I I ( 0.0)I ( 0.0)I ( 2.4)I ( 4.1)I I I I I I I I I I ARM C I 0.107 I 0.700 I 0.000 I 0.193 I I I I 15.0 I 98.0 I 0.0 I 27.0 I I I I ( 0.0)I ( 0.2)I ( 0.0)I ( 1.8)I I I I I I I I I I ARM D I 0.067 I 0.832 I 0.101 I 0.000 I I I I 25.0 I 312.0 I 38.0 I 0.0 I I I I ( 0.0)I ( 2.6)I ( 2.0)I ( 0.0)I I I I I I I I ------I 08.30 - 08.45 I I I I I I I I ARM A I 0.000 I 0.122 I 0.220 I 0.659 I I I I 0.0 I 5.0 I 9.0 I 27.0 I I I I ( 0.0)I ( 0.0)I ( 6.0)I ( 1.0)I I I I I I I I I I ARM B I 0.085 I 0.000 I 0.089 I 0.826 I I I I 18.0 I 0.0 I 19.0 I 176.0 I I I I ( 0.0)I ( 0.0)I ( 2.4)I ( 4.1)I I I I I I I I I I ARM C I 0.186 I 0.642 I 0.000 I 0.172 I I I I 38.0 I 131.0 I 0.0 I 35.0 I I I I ( 0.0)I ( 0.2)I ( 0.0)I ( 1.8)I I I I I I I I I I ARM D I 0.049 I 0.832 I 0.119 I 0.000 I I I I 18.0 I 308.0 I 44.0 I 0.0 I I I I ( 0.0)I ( 2.6)I ( 2.0)I ( 0.0)I I I I I I I I ------I 08.45 - 09.00 I I I I I I I I ARM A I 0.000 I 0.146 I 0.188 I 0.667 I I I I 0.0 I 7.0 I 9.0 I 32.0 I I I I ( 0.0)I ( 0.0)I ( 6.0)I ( 1.0)I I I I I I I I I I ARM B I 0.039 I 0.000 I 0.074 I 0.887 I I I I 8.0 I 0.0 I 15.0 I 181.0 I I I I ( 0.0)I ( 0.0)I ( 2.4)I ( 4.1)I I I I I I I I I I ARM C I 0.147 I 0.691 I 0.000 I 0.162 I I I I 20.0 I 94.0 I 0.0 I 22.0 I I I I ( 0.0)I ( 0.2)I ( 0.0)I ( 1.8)I I I I I I I I I I ARM D I 0.031 I 0.855 I 0.114 I 0.000 I I I I 12.0 I 331.0 I 44.0 I 0.0 I I I I ( 0.0)I ( 2.6)I ( 2.0)I ( 0.0)I I I I I I I I ------

DEMAND SET TITLE: WITH DEV AM

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------T33 I I TURNING PROPORTIONS I I I TURNING COUNTS I I I (PERCENTAGE OF H.V.S) I I ------I TIME I FROM/T I ARM A I ARM B I ARM C I ARM D I ------I 08.00 - 08.15 I I I I I I I I ARM A I 0.000 I 0.000 I 1.000 I 0.000 I I I I 0.0 I 0.0 I 0.0 I 0.0 I I I I ( 0.0)I ( 0.0)I ( 0.0)I ( 0.0)I I I I I I I I I I ARM B I 0.000 I 0.000 I 1.000 I 0.000 I I I I 0.0 I 0.0 I 0.0 I 0.0 I I I I ( 0.0)I ( 0.0)I ( 0.0)I ( 0.0)I I I I I I I I I I ARM C I 0.100 I 0.700 I 0.000 I 0.200 I I I I 1.0 I 7.0 I 0.0 I 2.0 I I I I ( 0.0)I ( 0.0)I ( 0.0)I ( 0.0)I I I I I I I I I I ARM D I 0.000 I 0.000 I 1.000 I 0.000 I I I I 0.0 I 0.0 I 2.0 I 0.0 I I I I ( 0.0)I ( 0.0)I ( 0.0)I ( 0.0)I I I I I I I I ------I 08.15 - 08.30 I I I I I I I I ARM A I 0.000 I 0.000 I 1.000 I 0.000 I I I I 0.0 I 0.0 I 0.0 I 0.0 I I I I ( 0.0)I ( 0.0)I ( 0.0)I ( 0.0)I I I I I I I I I I ARM B I 0.000 I 0.000 I 1.000 I 0.000 I I I I 0.0 I 0.0 I 0.0 I 0.0 I I I I ( 0.0)I ( 0.0)I ( 0.0)I ( 0.0)I I I I I I I I I I ARM C I 0.100 I 0.700 I 0.000 I 0.200 I I I I 1.0 I 7.0 I 0.0 I 2.0 I I I I ( 0.0)I ( 0.0)I ( 0.0)I ( 0.0)I I I I I I I I I I ARM D I 0.000 I 0.000 I 1.000 I 0.000 I I I I 0.0 I 0.0 I 2.0 I 0.0 I I I I ( 0.0)I ( 0.0)I ( 0.0)I ( 0.0)I I I I I I I I ------I 08.30 - 08.45 I I I I I I I I ARM A I 0.000 I 0.000 I 1.000 I 0.000 I I I I 0.0 I 0.0 I 0.0 I 0.0 I I I I ( 0.0)I ( 0.0)I ( 0.0)I ( 0.0)I I I I I I I I I I ARM B I 0.000 I 0.000 I 1.000 I 0.000 I I I I 0.0 I 0.0 I 0.0 I 0.0 I I I I ( 0.0)I ( 0.0)I ( 0.0)I ( 0.0)I I I I I I I I I I ARM C I 0.100 I 0.700 I 0.000 I 0.200 I I I I 1.0 I 7.0 I 0.0 I 2.0 I I I I ( 0.0)I ( 0.0)I ( 0.0)I ( 0.0)I I I I I I I I I I ARM D I 0.000 I 0.000 I 1.000 I 0.000 I I I I 0.0 I 0.0 I 2.0 I 0.0 I I I I ( 0.0)I ( 0.0)I ( 0.0)I ( 0.0)I I I I I I I I ------I 08.45 - 09.00 I I I I I I I I ARM A I 0.000 I 0.000 I 1.000 I 0.000 I I I I 0.0 I 0.0 I 0.0 I 0.0 I I I I ( 0.0)I ( 0.0)I ( 0.0)I ( 0.0)I I I I I I I I I I ARM B I 0.000 I 0.000 I 1.000 I 0.000 I I I I 0.0 I 0.0 I 0.0 I 0.0 I I I I ( 0.0)I ( 0.0)I ( 0.0)I ( 0.0)I I I I I I I I I I ARM C I 0.100 I 0.700 I 0.000 I 0.200 I I I I 1.0 I 7.0 I 0.0 I 2.0 I I I I ( 0.0)I ( 0.0)I ( 0.0)I ( 0.0)I I I I I I I I I I ARM D I 0.000 I 0.000 I 1.000 I 0.000 I I I I 0.0 I 0.0 I 2.0 I 0.0 I I I I ( 0.0)I ( 0.0)I ( 0.0)I ( 0.0)I I I I I I I I ------

QUEUE AND DELAY INFORMATION FOR EACH 15 MIN TIME SEGMENT ------

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------T70 I TIME DEMAND CAPACITY DEMAND/ PEDESTRIAN START END DELAY GEOMETRIC DELAY AVERAGE DELAY I I (VEH/MIN) (VEH/MIN) CAPACITY FLOW QUEUE QUEUE (VEH.MIN/ (VEH.MIN/ PER ARRIVING I I (RFC) (PEDS/MIN) (VEHS) (VEHS) TIME SEGMENT) TIME SEGMENT) VEHICLE (MIN) I - - I 08.00-08.15 I I ARM A 2.46 11.24 0.219 - - - 0.0 0.3 4.0 - 0.113 I I ARM B 16.53 37.42 0.442 - - - 0.0 0.8 11.5 - 0.048 I I ARM C 8.40 17.24 0.487 - - - 0.0 0.9 13.4 - 0.112 I I ARM D 27.20 29.08 0.935 - - - 0.0 10.3 119.2 - 0.330 I I I ------

------I TIME DEMAND CAPACITY DEMAND/ PEDESTRIAN START END DELAY GEOMETRIC DELAY AVERAGE DELAY I I (VEH/MIN) (VEH/MIN) CAPACITY FLOW QUEUE QUEUE (VEH.MIN/ (VEH.MIN/ PER ARRIVING I I (RFC) (PEDS/MIN) (VEHS) (VEHS) TIME SEGMENT) TIME SEGMENT) VEHICLE (MIN) I - - I 08.15-08.30 I I ARM A 1.93 11.98 0.161 - - - 0.3 0.2 3.0 - 0.100 I I ARM B 16.06 37.00 0.434 - - - 0.8 0.8 11.6 - 0.048 I I ARM C 9.93 17.22 0.577 - - - 0.9 1.3 19.2 - 0.136 I I ARM D 25.13 28.22 0.890 - - - 10.3 9.0 142.3 - 0.345 I I I ------

------I TIME DEMAND CAPACITY DEMAND/ PEDESTRIAN START END DELAY GEOMETRIC DELAY AVERAGE DELAY I I (VEH/MIN) (VEH/MIN) CAPACITY FLOW QUEUE QUEUE (VEH.MIN/ (VEH.MIN/ PER ARRIVING I I (RFC) (PEDS/MIN) (VEHS) (VEHS) TIME SEGMENT) TIME SEGMENT) VEHICLE (MIN) I - - I 08.30-08.45 I I ARM A 2.79 10.96 0.255 - - - 0.2 0.3 4.9 - 0.122 I I ARM B 14.26 36.38 0.392 - - - 0.8 0.6 9.8 - 0.045 I I ARM C 14.20 17.91 0.793 - - - 1.3 3.5 47.4 - 0.250 I I ARM D 24.80 25.67 0.966 - - - 9.0 15.0 187.8 - 0.612 I I I ------

------I TIME DEMAND CAPACITY DEMAND/ PEDESTRIAN START END DELAY GEOMETRIC DELAY AVERAGE DELAY I I (VEH/MIN) (VEH/MIN) CAPACITY FLOW QUEUE QUEUE (VEH.MIN/ (VEH.MIN/ PER ARRIVING I I (RFC) (PEDS/MIN) (VEHS) (VEHS) TIME SEGMENT) TIME SEGMENT) VEHICLE (MIN) I - - I 08.45-09.00 I I ARM A 3.26 11.13 0.293 - - - 0.3 0.4 6.0 - 0.127 I I ARM B 13.66 36.03 0.379 - - - 0.6 0.6 9.3 - 0.045 I I ARM C 9.67 17.90 0.540 - - - 3.5 1.2 19.3 - 0.126 I I ARM D 25.93 28.10 0.923 - - - 15.0 13.7 213.7 - 0.513 I I I ------

QUEUE AT ARM A ------

TIME SEGMENT NO. OF ENDING VEHICLES IN QUEUE

08.15 0.3 08.30 0.2 08.45 0.3 09.00 0.4

QUEUE AT ARM B ------

TIME SEGMENT NO. OF ENDING VEHICLES IN QUEUE

08.15 0.8 * 08.30 0.8 * 08.45 0.6 * 09.00 0.6 *

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QUEUE AT ARM C ------

TIME SEGMENT NO. OF ENDING VEHICLES IN QUEUE

08.15 0.9 * 08.30 1.3 * 08.45 3.5 **** 09.00 1.2 *

QUEUE AT ARM D ------

TIME SEGMENT NO. OF ENDING VEHICLES IN QUEUE

08.15 10.3 ********** 08.30 9.0 ********* 08.45 15.0 *************** 09.00 13.7 **************

QUEUEING DELAY INFORMATION OVER WHOLE PERIOD ------

------T75 I ARM I TOTAL DEMAND I * QUEUEING * I * INCLUSIVE QUEUEING * I I I I * DELAY * I * DELAY * I I I------I I I (VEH) (VEH/H) I (MIN) (MIN/VEH) I (MIN) (MIN/VEH) I ------I A I 156.6 I 156.6 I 17.9 I 0.11 I 17.9 I 0.11 I I B I 907.7 I 907.7 I 42.3 I 0.05 I 42.3 I 0.05 I I C I 633.0 I 633.0 I 99.3 I 0.16 I 99.4 I 0.16 I I D I 1545.9 I 1545.9 I 663.1 I 0.43 I 666.4 I 0.43 I ------I ALL I 3243.1 I 3243.1 I 822.6 I 0.25 I 826.0 I 0.25 I ------* DELAY IS THAT OCCURRING ONLY WITHIN THE TIME PERIOD. * INCLUSIVE DELAY INCLUDES DELAY SUFFERED BY VEHICLES WHICH ARE STILL QUEUEING AFTER THE END OF THE TIME PERIOD. * THESE WILL ONLY BE SIGNIFICANTLY DIFFERENT IF THERE IS A LARGE QUEUE REMAINING AT THE END OF THE TIME PERIOD.

END OF JOB

======end of file ======

Printed at 17:38:59 on 12/12/2012]

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______A R C A D Y 6 ______

ASSESSMENT OF ROUNDABOUT CAPACITY AND DELAY

Analysis Program: Release 7.0 (FEBRUARY 2010)

(c) Copyright TRL Limited, 2010

Adapted from ARCADY/3 which is Crown Copyright by permission of the controller of HMSO ______

For sales and distribution information, program advice and maintenance, contact:

TRL Limited Tel: +44 (0) 1344 770758 Crowthorne House Fax: +44 (0) 1344 770356 Nine Mile Ride Email: [email protected] Wokingham, Berks. Web: www.trlsoftware.co.uk RG40 3GA,UK

------THE USER OF THIS COMPUTER PROGRAM FOR THE SOLUTION OF AN ENGINEERING PROBLEM IS IN NO WAY RELIEVED OF THEIR RESPONSIBILITY FOR THE CORRECTNESS OF THE SOLUTION ------

Run with file:- "z:\EAS\Current Projects\Hertford Thieves Lane\Analysis\ARCADY\ A414 Thieves Lane RBT Existing Flows 2012 Direct Input & HGV PM.vai" (drive-on-the-left ) at 10:39:48 on Thursday, 13 December 2012

FILE PROPERTIES ***************

RUN TITLE: A414 Thieves Lane RBT Existing Flows 2012 LOCATION: A414 WITH THIEVES LANE DATE: 10/12/12 CLIENT: CROUDACE ENUMERATOR: EAS [EAS-PC] JOB NUMBER: 334 STATUS: DESCRIPTION:

INPUT DATA ********** ARM A - HERTINGFORDBURY ROAD ARM B - A414 WEST ARM C - THIEVES LANE ARM D - A414 EAST

GEOMETRIC DATA ------

------T5 I ARM I V (M) I E (M) I L (M) I R (M) I D (M) I PHI (DEG) I SLOPE I INTERCEPT (PCU/MIN) I ------I ARM A I 3.20 I 7.70 I 18.30 I 62.00 I 61.00 I 23.0 I 0.589 I 30.536 I I ARM B I 7.30 I 8.60 I 5.00 I 45.00 I 61.00 I 30.0 I 0.695 I 41.547 I I ARM C I 3.60 I 7.36 I 12.80 I 15.50 I 61.00 I 50.0 I 0.502 I 25.630 I I ARM D I 6.71 I 6.71 I 0.00 I 36.50 I 61.00 I 34.0 I 0.614 I 34.164 I ------

V = approach half-width L = effective flare length D = inscribed circle diameter E = entry width R = entry radius PHI = entry angle

TRAFFIC DEMAND DATA ------

Only sets included in the current run are shown

SCALING FACTORS

------T13 IARM I FLOW SCALE(%) I ------I A I 100 I I B I 100 I I C I 100 I I D I 100 I ------

TIME PERIOD BEGINS(17.00)AND ENDS(18.00)

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LENGTH OF TIME PERIOD -( 60) MINUTES

LENGTH OF TIME SEGMENT - (15) MINUTES

DEMAND FLOW PROFILES ARE INPUT DIRECTLY.

DEMAND SET TITLE: 2012 EXISTING PM

DEMAND SET TITLE: 2012 EXISTING PM

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------T33 I I TURNING PROPORTIONS I I I TURNING COUNTS I I I (PERCENTAGE OF H.V.S) I I ------I TIME I FROM/T I ARM A I ARM B I ARM C I ARM D I ------I 17.00 - 17.15 I I I I I I I I ARM A I 0.000 I 0.139 I 0.222 I 0.639 I I I I 0.0 I 5.0 I 8.0 I 23.0 I I I I ( 0.0)I ( 0.0)I ( 0.0)I ( 0.0)I I I I I I I I I I ARM B I 0.013 I 0.000 I 0.258 I 0.729 I I I I 4.0 I 0.0 I 80.0 I 226.0 I I I I ( 3.0)I ( 0.0)I ( 0.0)I ( 2.0)I I I I I I I I I I ARM C I 0.102 I 0.714 I 0.000 I 0.184 I I I I 5.0 I 35.0 I 0.0 I 9.0 I I I I ( 0.0)I ( 1.0)I ( 0.0)I ( 0.0)I I I I I I I I I I ARM D I 0.031 I 0.755 I 0.215 I 0.000 I I I I 8.0 I 197.0 I 56.0 I 0.0 I I I I ( 0.0)I ( 2.0)I ( 4.0)I ( 0.0)I I I I I I I I ------I 17.15 - 17.30 I I I I I I I I ARM A I 0.000 I 0.118 I 0.294 I 0.588 I I I I 0.0 I 4.0 I 10.0 I 20.0 I I I I ( 0.0)I ( 0.0)I ( 0.0)I ( 0.0)I I I I I I I I I I ARM B I 0.024 I 0.000 I 0.280 I 0.696 I I I I 8.0 I 0.0 I 95.0 I 236.0 I I I I ( 3.0)I ( 0.0)I ( 0.0)I ( 2.0)I I I I I I I I I I ARM C I 0.097 I 0.613 I 0.000 I 0.290 I I I I 6.0 I 38.0 I 0.0 I 18.0 I I I I ( 0.0)I ( 1.0)I ( 0.0)I ( 0.0)I I I I I I I I I I ARM D I 0.049 I 0.664 I 0.287 I 0.000 I I I I 12.0 I 162.0 I 70.0 I 0.0 I I I I ( 0.0)I ( 2.0)I ( 4.0)I ( 0.0)I I I I I I I I ------I 17.30 - 17.45 I I I I I I I I ARM A I 0.000 I 0.065 I 0.290 I 0.645 I I I I 0.0 I 2.0 I 9.0 I 20.0 I I I I ( 0.0)I ( 0.0)I ( 0.0)I ( 0.0)I I I I I I I I I I ARM B I 0.040 I 0.000 I 0.292 I 0.669 I I I I 14.0 I 0.0 I 103.0 I 236.0 I I I I ( 3.0)I ( 0.0)I ( 0.0)I ( 2.0)I I I I I I I I I I ARM C I 0.081 I 0.565 I 0.000 I 0.355 I I I I 5.0 I 35.0 I 0.0 I 22.0 I I I I ( 0.0)I ( 1.0)I ( 0.0)I ( 0.0)I I I I I I I I I I ARM D I 0.047 I 0.723 I 0.230 I 0.000 I I I I 11.0 I 170.0 I 54.0 I 0.0 I I I I ( 0.0)I ( 2.0)I ( 4.0)I ( 0.0)I I I I I I I I ------I 17.45 - 18.00 I I I I I I I I ARM A I 0.000 I 0.070 I 0.349 I 0.581 I I I I 0.0 I 3.0 I 15.0 I 25.0 I I I I ( 0.0)I ( 0.0)I ( 0.0)I ( 0.0)I I I I I I I I I I ARM B I 0.024 I 0.277 I 0.699 I 0.000 I I I I 8.0 I 91.0 I 230.0 I 0.0 I I I I ( 3.0)I ( 0.0)I ( 0.0)I ( 2.0)I I I I I I I I I I ARM C I 0.052 I 0.586 I 0.362 I 0.000 I I I I 3.0 I 34.0 I 21.0 I 0.0 I I I I ( 0.0)I ( 1.0)I ( 0.0)I ( 0.0)I I I I I I I I I I ARM D I 0.058 I 0.693 I 0.249 I 0.000 I I I I 16.0 I 192.0 I 69.0 I 0.0 I I I I ( 0.0)I ( 2.0)I ( 4.0)I ( 0.0)I I I I I I I I ------

QUEUE AND DELAY INFORMATION FOR EACH 15 MIN TIME SEGMENT ------

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------T70 I TIME DEMAND CAPACITY DEMAND/ PEDESTRIAN START END DELAY GEOMETRIC DELAY AVERAGE DELAY I I (VEH/MIN) (VEH/MIN) CAPACITY FLOW QUEUE QUEUE (VEH.MIN/ (VEH.MIN/ PER ARRIVING I I (RFC) (PEDS/MIN) (VEHS) (VEHS) TIME SEGMENT) TIME SEGMENT) VEHICLE (MIN) I - - I 17.00-17.15 I I ARM A 2.40 19.03 0.126 - - - 0.0 0.1 2.1 - 0.060 I I ARM B 20.66 36.88 0.560 - - - 0.0 1.3 18.3 - 0.061 I I ARM C 3.26 16.93 0.193 - - - 0.0 0.2 3.5 - 0.073 I I ARM D 17.40 31.61 0.550 - - - 0.0 1.2 17.5 - 0.070 I I I ------

------I TIME DEMAND CAPACITY DEMAND/ PEDESTRIAN START END DELAY GEOMETRIC DELAY AVERAGE DELAY I I (VEH/MIN) (VEH/MIN) CAPACITY FLOW QUEUE QUEUE (VEH.MIN/ (VEH.MIN/ PER ARRIVING I I (RFC) (PEDS/MIN) (VEHS) (VEHS) TIME SEGMENT) TIME SEGMENT) VEHICLE (MIN) I - - I 17.15-17.30 I I ARM A 2.26 19.68 0.115 - - - 0.1 0.1 2.0 - 0.057 I I ARM B 22.60 36.26 0.623 - - - 1.3 1.6 23.9 - 0.073 I I ARM C 4.13 16.54 0.250 - - - 0.2 0.3 4.9 - 0.080 I I ARM D 16.27 31.24 0.521 - - - 1.2 1.1 16.7 - 0.067 I I I ------

------I TIME DEMAND CAPACITY DEMAND/ PEDESTRIAN START END DELAY GEOMETRIC DELAY AVERAGE DELAY I I (VEH/MIN) (VEH/MIN) CAPACITY FLOW QUEUE QUEUE (VEH.MIN/ (VEH.MIN/ PER ARRIVING I I (RFC) (PEDS/MIN) (VEHS) (VEHS) TIME SEGMENT) TIME SEGMENT) VEHICLE (MIN) I - - I 17.30-17.45 I I ARM A 2.06 20.13 0.102 - - - 0.1 0.1 1.7 - 0.055 I I ARM B 23.53 37.06 0.635 - - - 1.6 1.7 25.5 - 0.074 I I ARM C 4.13 16.34 0.253 - - - 0.3 0.3 5.0 - 0.082 I I ARM D 15.67 31.19 0.502 - - - 1.1 1.0 15.5 - 0.064 I I I ------

------I TIME DEMAND CAPACITY DEMAND/ PEDESTRIAN START END DELAY GEOMETRIC DELAY AVERAGE DELAY I I (VEH/MIN) (VEH/MIN) CAPACITY FLOW QUEUE QUEUE (VEH.MIN/ (VEH.MIN/ PER ARRIVING I I (RFC) (PEDS/MIN) (VEHS) (VEHS) TIME SEGMENT) TIME SEGMENT) VEHICLE (MIN) I - - I 17.45-18.00 I I ARM A 2.87 14.34 0.200 - - - 0.1 0.2 3.6 - 0.087 I I ARM B 21.93 35.39 0.620 - - - 1.7 1.6 25.0 - 0.074 I I ARM C 3.87 21.32 0.181 - - - 0.3 0.2 3.4 - 0.057 I I ARM D 18.47 27.09 0.682 - - - 1.0 2.1 29.8 - 0.114 I I I ------

QUEUE AT ARM A ------

TIME SEGMENT NO. OF ENDING VEHICLES IN QUEUE

17.15 0.1 17.30 0.1 17.45 0.1 18.00 0.2

QUEUE AT ARM B ------

TIME SEGMENT NO. OF ENDING VEHICLES IN QUEUE

17.15 1.3 * 17.30 1.6 ** 17.45 1.7 ** 18.00 1.6 **

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QUEUE AT ARM C ------

TIME SEGMENT NO. OF ENDING VEHICLES IN QUEUE

17.15 0.2 17.30 0.3 17.45 0.3 18.00 0.2

QUEUE AT ARM D ------

TIME SEGMENT NO. OF ENDING VEHICLES IN QUEUE

17.15 1.2 * 17.30 1.1 * 17.45 1.0 * 18.00 2.1 **

QUEUEING DELAY INFORMATION OVER WHOLE PERIOD ------

------T75 I ARM I TOTAL DEMAND I * QUEUEING * I * INCLUSIVE QUEUEING * I I I I * DELAY * I * DELAY * I I I------I I I (VEH) (VEH/H) I (MIN) (MIN/VEH) I (MIN) (MIN/VEH) I ------I A I 143.9 I 143.9 I 9.5 I 0.07 I 9.5 I 0.07 I I B I 1330.8 I 1330.8 I 92.6 I 0.07 I 92.7 I 0.07 I I C I 230.8 I 230.8 I 16.8 I 0.07 I 16.8 I 0.07 I I D I 1017.1 I 1017.1 I 79.5 I 0.08 I 79.6 I 0.08 I ------I ALL I 2722.6 I 2722.6 I 198.3 I 0.07 I 198.4 I 0.07 I ------* DELAY IS THAT OCCURRING ONLY WITHIN THE TIME PERIOD. * INCLUSIVE DELAY INCLUDES DELAY SUFFERED BY VEHICLES WHICH ARE STILL QUEUEING AFTER THE END OF THE TIME PERIOD. * THESE WILL ONLY BE SIGNIFICANTLY DIFFERENT IF THERE IS A LARGE QUEUE REMAINING AT THE END OF THE TIME PERIOD.

END OF JOB

======end of file ======

Printed at 10:45:35 on 13/12/2012] 12 March 2013 334 A414 Thieves Lane RBT Existing Flows 2012 Direct Input & HGV PM.vai

ARCADY 6 GUI Version: 6.2 AG Analysis Program: Release 7.0 (FEBRUARY 2010) (c) Copyright TRL Limited, 2004 Adapted from ARCADY/3 which is Crown Copyright by permission of the controller of HMSO For sales and distribution information, program advice and maintenance, contact: TRL Limited Tel: +44 (0)1344 770758 Crowthorne House Fax:+44 (0)1344 770864 Nine Mile Ride Email: software@ trl.co.uk Wokingham, Berks. Web:www.trlsoftware.co.uk RG40 3GA, UK The user of this computer program for the solution of an engineering problem is in no way relieved of their responsibility for the correctness of the solution

Run Information Run with file:- z:\EAS\Current Projects\Hertford Thieves Lane\Analysis\ARCADY\A414 Thieves Lane RBT Existing Flows 2012 Direct Input & HGV PM.vai At: 15:27:29 on Tuesday, March 12, 2013 Mode: Drive On The Left Units: Metric

Arm Labelling

Arm Full Arm Names Arm A HERTINGFORDBURY ROAD Arm B A414 WEST Arm C THIEVES LANE Arm D A414 EAST

Flow Scaling Factor

Arm Flow Scaling Factor (%) Arm A 100 Arm B 100 Arm C 100 Arm D 100

File Properties

Run Title A414 Thieves Lane RBT Existing Flows 2012 Location A414 WITH THIEVES LANE Date 10/12/2012 Client CROUDACE Enumerator EAS [EAS-PC] Job Number 334 Status Description

Page 1 of 9 12 March 2013 334 A414 Thieves Lane RBT Existing Flows 2012 Direct Input & HGV PM.vai

Errors and Warnings

[No errors or warnings] Geometric Data

Data Item Arm A Arm B Arm C Arm D Approach Road Half-Width (m) 3.20 7.30 3.60 6.71 Entry Width (m) 7.70 8.60 7.36 6.71 Flare Length (m) 18.30 5.00 12.80 0.00 Entry Radius (m) 62.00 45.00 15.50 36.50 Inscribed Circle Diameter (m) 61.00 61.00 61.00 61.00 Entry Angle (degrees) 23.00 30.00 50.00 34.00 Slope 0.589 0.695 0.502 0.614 Intercept (PCU/Min) 30.536 41.547 25.630 34.164

Page 2 of 9 12 March 2013 334 A414 Thieves Lane RBT Existing Flows 2012 Direct Input & HGV PM.vai

Junction Diagram: (View Extent = 80m) A414 EAST 0 m

THIEVES LANE 12.8 m

18.3 HERTINGFORDBURY m ROAD

10 Metres 5 m5 WEST A414 Flare Angles Between Arms (Degrees): Arm A(90) Arm B(90) Arm C(90) Arm D(90) Demand Data Demand Profiles are Synthesised using DIRECT Data Period of interest (for Queue and Delay calculations): 17:00 to 18:00 Length of Time Period: 60 min Length of Time Segment: 15 min

Direct Data for Demand Set: 2012 EXISTING PM

Demand Data Time Period Arm (Veh/Min) A 2.40 Segment : 1 - B 20.66 17:00 to 17:15 C 3.26 D 17.40 A 2.26 Segment : 2 - B 22.60 17:15 to 17:30 C 4.13 D 16.27 A 2.06 Segment : 3 - B 23.53 17:30 to 17:45 C 4.13 D 15.67 A 2.87 Segment : 4 - B 21.93 17:45 to 18:00 C 3.87 D 18.47

Page 3 of 9 12 March 2013 334 A414 Thieves Lane RBT Existing Flows 2012 Direct Input & HGV PM.vai

Direct Data for Demand Set: PM DEVELOPMENT FLOWS

Demand Data Time Period Arm (Veh/Min) A 0.06 Segment : 1 - B 0.40 17:00 to 17:15 C 0.27 D 0.27 A 0.06 Segment : 2 - B 0.40 17:15 to 17:30 C 0.27 D 0.27 A 0.06 Segment : 3 - B 0.40 17:30 to 17:45 C 0.27 D 0.27 A 0.06 Segment : 4 - B 0.40 17:45 to 18:00 C 0.27 D 0.27

Turning Proportions for Demand Set: 2012 EXISTING PM

Turning proportions vary over time and entry and calculated from turning count data (shaded)

Time Period From/To Arm A Arm B Arm C Arm D 0.000 0.139 0.222 0.639 Arm A 0.0 5.0 8.0 23.0 0.013 0.000 0.258 0.729 Arm B Segment : 1 - 4.0 0.0 80.0 226.0 17:00 to 17:15 0.102 0.714 0.000 0.184 Arm C 5.0 35.0 0.0 9.0 0.031 0.755 0.215 0.000 Arm D 8.0 197.0 56.0 0.0 0.000 0.118 0.294 0.588 Arm A 0.0 4.0 10.0 20.0 0.024 0.000 0.280 0.696 Arm B Segment : 2 - 8.0 0.0 95.0 236.0 17:15 to 17:30 0.097 0.613 0.000 0.290 Arm C 6.0 38.0 0.0 18.0 0.049 0.664 0.287 0.000 Arm D 12.0 162.0 70.0 0.0 0.000 0.065 0.290 0.645 Arm A 0.0 2.0 9.0 20.0 0.040 0.000 0.292 0.669 Arm B Segment : 3 - 14.0 0.0 103.0 236.0 17:30 to 17:45 0.081 0.565 0.000 0.355 Arm C 5.0 35.0 0.0 22.0 0.047 0.723 0.230 0.000 Arm D 11.0 170.0 54.0 0.0 0.000 0.070 0.349 0.581 Arm A 0.0 3.0 15.0 25.0 0.024 0.277 0.699 0.000 Arm B Segment : 4 - 8.0 91.0 230.0 0.0 17:45 to 18:00 0.052 0.586 0.362 0.000 Arm C 3.0 34.0 21.0 0.0 0.058 0.693 0.249 0.000 Arm D 16.0 192.0 69.0 0.0

Page 4 of 9 12 March 2013 334 A414 Thieves Lane RBT Existing Flows 2012 Direct Input & HGV PM.vai

Turning Proportions for Demand Set: PM DEVELOPMENT FLOWS

Turning proportions vary over time and entry and calculated from turning count data (shaded)

Time Period From/To Arm A Arm B Arm C Arm D 0.000 0.000 1.000 0.000 Arm A 0.0 0.0 0.0 0.0 0.000 0.000 1.000 0.000 Arm B Segment : 1 - 0.0 0.0 6.0 0.0 17:00 to 17:15 0.000 0.750 0.000 0.250 Arm C 0.0 3.0 0.0 1.0 0.000 0.000 1.000 0.000 Arm D 0.0 0.0 4.0 0.0 0.000 0.000 1.000 0.000 Arm A 0.0 0.0 0.0 0.0 0.000 0.000 1.000 0.000 Arm B Segment : 2 - 0.0 0.0 6.0 0.0 17:15 to 17:30 0.000 0.750 0.000 0.250 Arm C 0.0 3.0 0.0 1.0 0.000 0.000 1.000 0.000 Arm D 0.0 0.0 4.0 0.0 0.000 0.000 1.000 0.000 Arm A 0.0 0.0 0.0 0.0 0.000 0.000 1.000 0.000 Arm B Segment : 3 - 0.0 0.0 6.0 0.0 17:30 to 17:45 0.000 0.750 0.000 0.250 Arm C 0.0 3.0 0.0 1.0 0.000 0.000 1.000 0.000 Arm D 0.0 0.0 4.0 0.0 0.000 0.000 1.000 0.000 Arm A 0.0 0.0 0.0 0.0 0.000 0.000 1.000 0.000 Arm B Segment : 4 - 0.0 0.0 6.0 0.0 17:45 to 18:00 0.000 0.750 0.000 0.250 Arm C 0.0 3.0 0.0 1.0 0.000 0.000 1.000 0.000 Arm D 0.0 0.0 4.0 0.0

Heavy Vehicle Percentages for Demand Set: 2012 EXISTING PM

Vary over entry

Time Period From/To Arm A Arm B Arm C Arm D Arm A 0.0 0.0 0.0 0.0 Arm B 3.0 0.0 0.0 2.0 17:00 to 17:15 Arm C 0.0 1.0 0.0 0.0 Arm D 0.0 2.0 4.0 0.0

Heavy Vehicle Percentages for Demand Set: PM DEVELOPMENT FLOWS

Vary over entry

Time Period From/To Arm A Arm B Arm C Arm D Arm A 0.0 0.0 0.0 0.0 Arm B 0.0 0.0 0.0 0.0 17:00 to 17:15 Arm C 0.0 0.0 0.0 0.0 Arm D 0.0 0.0 0.0 0.0

Page 5 of 9 12 March 2013 334 A414 Thieves Lane RBT Existing Flows 2012 Direct Input & HGV PM.vai

Queue Diagrams: (View Extent = 80m)

Queue Length Colour Mean Queue 5 th % ile 90 th % ile 95 th % ile

Start Time: 17:00---> End Time: 18:00

Queue Interval 1: 17:15 Queue Interval 2: 17:30 A414 EAST 0 m A414 EAST 0 m

THIEVES LANE 12.8 m THIEVES LANE 12.8 m

18.3 HERTINGFORDBURY m ROAD 18.3 HERTINGFORDBURY m ROAD 5 m 5 WEST A414

5 m 5 WEST A414 10 Metres 10 Metres Flare Flare

Queue Interval 3: 17:45 Queue Interval 4: 18:00 A414 EAST 0 m A414 EAST 0 m

THIEVES LANE 12.8 m THIEVES LANE 12.8 m

18.3 HERTINGFORDBURY m ROAD 18.3 HERTINGFORDBURY m ROAD 5 m5 WEST A414 5 m 5 WEST A414 10 Metres 10 Metres Flare Flare

Page 6 of 9 12 March 2013 334 A414 Thieves Lane RBT Existing Flows 2012 Direct Input & HGV PM.vai

Demand Data Graphs Direct Entry/Exit Flows for Demand Set: 2012 EXISTING PM

Arm A Entry Flows Arm B Entry Flows Arm C Entry Flows Arm D Entry Flows 1.0 1.0 1.0 1.0

0.9 0.9 0.9 0.9

) ) ) )

n n n n

i 0.8 i 0.8 i 0.8 i 0.8

M M M M / 0.7 / 0.7 / 0.7 / 0.7

h h h h e 0.6 e 0.6 e 0.6 e 0.6

V V V V

( ( ( (

0.5 0.5 0.5 0.5

w w w w

o o o o l 0.4 l 0.4 l 0.4 l 0.4

F F F F

f f f f

o 0.3 o 0.3 o 0.3 o 0.3

e e e e t 0.2 t 0.2 t 0.2 t 0.2

a a a a

R R R R 0.1 0.1 0.1 0.1

0.0 0.0 0.0 0.0 17:00 17:15 17:30 17:45 18:00 17:00 17:15 17:30 17:45 18:00 17:00 17:15 17:30 17:45 18:00 17:00 17:15 17:30 17:45 18:00 Time Time Time Time Direct Entry/Exit Flows for Demand Set: PM DEVELOPMENT FLOWS

Arm A Entry Flows Arm B Entry Flows Arm C Entry Flows Arm D Entry Flows 1.0 1.0 1.0 1.0

0.9 0.9 0.9 0.9

) ) ) )

n n n n

i 0.8 i 0.8 i 0.8 i 0.8

M M M M / 0.7 / 0.7 / 0.7 / 0.7

h h h h e 0.6 e 0.6 e 0.6 e 0.6

V V V V

( ( ( (

0.5 0.5 0.5 0.5

w w w w

o o o o l 0.4 l 0.4 l 0.4 l 0.4

F F F F

f f f f

o 0.3 o 0.3 o 0.3 o 0.3

e e e e t 0.2 t 0.2 t 0.2 t 0.2

a a a a

R R R R 0.1 0.1 0.1 0.1

0.0 0.0 0.0 0.0 17:00 17:15 17:30 17:45 18:00 17:00 17:15 17:30 17:45 18:00 17:00 17:15 17:30 17:45 18:00 17:00 17:15 17:30 17:45 18:00 Time Time Time Time

Capacity (against Time) Graphs, for each 15min Interval (17:00 - 18:00) (QUEUEING DELAY INFORMATION OVER WHOLE PERIOD)

Capacity Vs Time (Arm A) Capacity Vs Time (Arm B) Capacity Vs Time (Arm C) Capacity Vs Time (Arm D) 20 37.0 22 32

36.8 19 21 31 36.6

) ) ) )

n n n n i i 36.4 i i

M 18 M M 20 M 30

/ / / /

h h 36.2 h h

e e e e

V V V V

( 17 ( 36.0 ( 19 ( 29

y y y y

t t t t

i i 35.8 i i

c c c c

a 16 a a 18 a 28 35.6

p p p p

a a a a

C C 35.4 C C 15 17 27 35.2

14 35.0 16 26 17:00 17:15 17:30 17:45 18:00 17:00 17:15 17:30 17:45 18:00 17:00 17:15 17:30 17:45 18:00 17:00 17:15 17:30 17:45 18:00 Time Time Time Time

RFC (against Time) Graphs, for each 15min Interval (17:00 - 18:00) (QUEUEING DELAY INFORMATION OVER WHOLE PERIOD)

RFC Vs Time (Arm A) RFC Vs Time (Arm B) RFC Vs Time (Arm C) RFC Vs Time (Arm D) 1.0 1.0 1.0 1.0

0.9 0.9 0.9 0.9

0.8 0.8 0.8 0.8

0.7 0.7 0.7 0.7

0.6 0.6 0.6 0.6

C C C C

F 0.5 F 0.5 F 0.5 F 0.5

R R R R 0.4 0.4 0.4 0.4

0.3 0.3 0.3 0.3

0.2 0.2 0.2 0.2

0.1 0.1 0.1 0.1

0.0 0.0 0.0 0.0 17:00 17:15 17:30 17:45 18:00 17:00 17:15 17:30 17:45 18:00 17:00 17:15 17:30 17:45 18:00 17:00 17:15 17:30 17:45 18:00 Time Time Time Time

Page 7 of 9 12 March 2013 334 A414 Thieves Lane RBT Existing Flows 2012 Direct Input & HGV PM.vai

Start Queue (against Time) Graphs, for each 15min Interval (17:00 - 18:00)

(QUEUEING DELAY INFORMATION OVER WHOLE PERIOD)

Start Queue Vs Time (Arm A) Start Queue Vs Time (Arm B) Start Queue Vs Time (Arm C) Start Queue Vs Time (Arm D) 1.0 2.0 1.0 2.0

0.9 1.8 0.9 1.8

) 0.8 ) 1.6 ) 0.8 ) 1.6

s s s s

h 0.7 h 1.4 h 0.7 h 1.4

e e e e

V V V V

( 0.6 ( 1.2 ( 0.6 ( 1.2

e e e e

u 0.5 u 1.0 u 0.5 u 1.0

e e e e

u 0.4 u 0.8 u 0.4 u 0.8

Q Q Q Q

t t t t

r 0.3 r 0.6 r 0.3 r 0.6

a a a a

t t t t

S 0.2 S 0.4 S 0.2 S 0.4

0.1 0.2 0.1 0.2

0.0 0.0 0.0 0.0 17:00 17:15 17:30 17:45 18:00 17:00 17:15 17:30 17:45 18:00 17:00 17:15 17:30 17:45 18:00 17:00 17:15 17:30 17:45 18:00 Time Time Time Time

End Queue (against Time) Graphs, for each 15min Interval (17:00 - 18:00) (QUEUEING DELAY INFORMATION OVER WHOLE PERIOD)

End Queue Vs Time (Arm A) End Queue Vs Time (Arm B) End Queue Vs Time (Arm C) End Queue Vs Time (Arm D) 1.0 2.0 1.0 4.0

0.9 1.8 0.9 3.6

0.8 1.6 0.8 3.2

) ) ) )

s s s s

h 0.7 h 1.4 h 0.7 h 2.8

e e e e

V V V V

( 0.6 ( 1.2 ( 0.6 ( 2.4

e e e e

u 0.5 u 1.0 u 0.5 u 2.0

e e e e

u 0.4 u 0.8 u 0.4 u 1.6

Q Q Q Q

d 0.3 d 0.6 d 0.3 d 1.2

n n n n

E 0.2 E 0.4 E 0.2 E 0.8

0.1 0.2 0.1 0.4

0.0 0.0 0.0 0.0 17:00 17:15 17:30 17:45 18:00 17:00 17:15 17:30 17:45 18:00 17:00 17:15 17:30 17:45 18:00 17:00 17:15 17:30 17:45 18:00 Time Time Time Time

Geometric Delay Graph No Data. Please select 'Geometric Delay' in 'Principal Options' and try again. Delay (against Time) Graphs, for each 15min Interval (17:00 - 18:00) (QUEUEING DELAY INFORMATION OVER WHOLE PERIOD)

Delay Vs Time (Arm A) Delay Vs Time (Arm B) Delay Vs Time (Arm C) Delay Vs Time (Arm D) 4.0 28 6.0 35

3.6 27 5.6 3.2 5.2 26 30

) ) ) )

n 2.8 n n 4.8 n i i 25 i i

M M M M

. 2.4 . . 4.4 .

h h 24 h h e 2.0 e e 4.0 e 25

V V V V

( ( 23 ( (

y 1.6 y y 3.6 y

a a a a

l l 22 l l

e 1.2 e e 3.2 e

D D D D 20 21 0.8 2.8

0.4 20 2.4

0.0 19 2.0 15 17:00 17:15 17:30 17:45 18:00 17:00 17:15 17:30 17:45 18:00 17:00 17:15 17:30 17:45 18:00 17:00 17:15 17:30 17:45 18:00 Time Time Time Time

Page 8 of 9 12 March 2013 334 A414 Thieves Lane RBT Existing Flows 2012 Direct Input & HGV PM.vai

Queues and Delay:

Geometric Delay Arrival Capacity Demand / Start End Delay Demand Ped Flow (Veh.Min / Delay Segment Arm (Veh / Capacity Queue Queue (Veh.Min / (Veh / Min) (Ped / Min) Time (Min / Min) (RFC) (Veh) (Veh) Time Segment) Veh) Segment)

A 2.46 18.75 0.131 - 0.0 0.2 2.2 - 0.061 Segment : 1 - B 21.06 36.67 0.574 - 0.0 1.3 19.4 - 0.063 17:00 to 17:15 C 3.53 16.94 0.208 - 0.0 0.3 3.8 - 0.074 D 17.67 31.50 0.561 - 0.0 1.3 18.3 - 0.071 A 2.32 19.40 0.120 - 0.2 0.1 2.1 - 0.059 Segment : 2 - B 23.00 36.05 0.638 - 1.3 1.7 25.4 - 0.076 17:15 to 17:30 C 4.40 16.55 0.266 - 0.3 0.4 5.3 - 0.082 D 16.54 31.14 0.531 - 1.3 1.1 17.4 - 0.069 A 2.12 19.85 0.107 - 0.1 0.1 1.8 - 0.056 Segment : 3 - B 23.93 36.85 0.649 - 1.7 1.8 27.1 - 0.077 17:30 to 17:45 C 4.40 16.34 0.269 - 0.4 0.4 5.5 - 0.084 D 15.94 31.08 0.513 - 1.1 1.1 16.1 - 0.066 A 2.93 14.06 0.208 - 0.1 0.3 3.8 - 0.090 Segment : 4 - B 22.33 35.17 0.635 - 1.8 1.8 26.7 - 0.078 17:45 to 18:00 C 4.14 21.33 0.194 - 0.4 0.2 3.7 - 0.058 D 18.74 26.98 0.695 - 1.1 2.2 31.4 - 0.119

Queuing Delay Information Over Whole Period

Total Demand Queueing Delay Inclusive Queueing Delay Arm (Veh) (Veh/Hr) (Min) (Min/Veh) (Min) (Min/Veh) A 147.4 147.4 9.9 0.07 9.9 0.07 B 1354.8 1354.8 98.5 0.07 98.6 0.07 C 247.1 247.1 18.3 0.07 18.3 0.07 D 1033.3 1033.3 83.3 0.08 83.4 0.08 ALL 2782.6 2782.6 210.0 0.08 210.1 0.08

Delay is that occuring only within the time period. Inclusive delay includes delay suffered by vehicles that are still queueing after the end of the time period. These will only be significantly different if there is a large queue remaining at the end of the time period.

Accident Data No Data, please select the 'Accident Analysis' option in 'Principal Options' and try again. Accident Results

No Data, please select the 'Accident Analysis' option in 'Principal Options' and try again.

Page 9 of 9 28 November 2012 334 existing flows thieves lane welwyn rd rb.vai

ARCADY 6 GUI Version: 6.2 AG Analysis Program: Release 7.0 (FEBRUARY 2010) (c) Copyright TRL Limited, 2004 Adapted from ARCADY/3 which is Crown Copyright by permission of the controller of HMSO For sales and distribution information, program advice and maintenance, contact: TRL Limited Tel: +44 (0)1344 770758 Crowthorne House Fax:+44 (0)1344 770864 Nine Mile Ride Email: software@ trl.co.uk Wokingham, Berks. Web:www.trlsoftware.co.uk RG40 3GA, UK The user of this computer program for the solution of an engineering problem is in no way relieved of their responsibility for the correctness of the solution

Run Information Run with file:- z:\EAS\Current Projects\Hertford Thieves Lane\Analysis\ARCADY\existing flows thieves lane welwyn rd rb.vai At: 15:07:01 on Wednesday, November 28, 2012 Mode: Drive On The Left Units: Metric

Arm Labelling

Arm Full Arm Names Arm A Thieves Lane Arm B Welwyn Road West Arm C Welwyn Road East

Flow Scaling Factor

Arm Flow Scaling Factor (%) Arm A 100 Arm B 100 Arm C 100

File Properties

Run Title existing layout Location Thieves Lane/Welwyn Road RB Date 28/11/2012 Client Croudace Enumerator Job Number 334 Status Draft 1 Description

Page 1 of 7 28 November 2012 334 existing flows thieves lane welwyn rd rb.vai

Errors and Warnings

[No errors or warnings] Geometric Data

Data Item Arm A Arm B Arm C Approach Road Half-Width (m) 3.80 3.95 3.95 Entry Width (m) 7.40 6.80 5.70 Flare Length (m) 16.10 25.00 19.00 Entry Radius (m) 33.70 106.50 38.70 Inscribed Circle Diameter (m) 29.50 27.70 30.90 Entry Angle (degrees) 12.00 27.50 17.00 Slope 0.732 0.720 0.682 Intercept (PCU/Min) 32.240 31.969 28.614

Page 2 of 7 28 November 2012 334 existing flows thieves lane welwyn rd rb.vai

Junction Diagram: (View Extent = 40m) 19 m 19 Welwyn Road East

m 2 5 t es d W oa R yn elw W

5 Metres 1 6 . 1 Flare m Th iev Angles Between Arms (Degrees): Arm A(120) Arm B(120) Armes C(120) La ne Demand Data

Demand Profiles are Synthesised using ODTAB Data Period of interest (for Queue and Delay calculations): 07:45 to 09:15 Length of Time Period: 90 min Length of Time Segment: 15 min

Total Traffic Demand (Vehicles/Hour) for Demand Set: existing layout

From/To Arm A Arm B Arm C Arm A 0.0 251.0 181.0 Arm B 116.0 0.0 269.0 Arm C 390.0 343.0 0.0

Entry Flow Data for Demand Set: existing layout Number of Minutes From Start When Rate of flow (Veh/Min) Arms Flow Starts To Top of Peak is Flow Stops Before Peak At Top of Peak After Peak Rise Reached Falling Arm A 15.00 45.00 75.00 5.40 8.10 5.40 Arm B 15.00 45.00 75.00 4.81 7.22 4.81 Arm C 15.00 45.00 75.00 9.16 13.74 9.16

Turning Proportions

ODTAB Demand Data type is used, no turning proportions available.

Heavy Vehicle Percentages for Demand Set: existing layout

Default vehicle percentages

Time Period From/To Arm A Arm B Arm C Arm A 10.0 10.0 10.0 07:45 to 09:15 Arm B 10.0 10.0 10.0 Arm C 10.0 10.0 10.0

Page 3 of 7 28 November 2012 334 existing flows thieves lane welwyn rd rb.vai

Queue Diagrams: (View Extent = 40m)

Queue Length Colour Mean Queue 5 th % ile 90 th % ile 95 th % ile

Start Time: 07:45---> End Time: 09:15

Queue Interval 1: 08:00 Queue Interval 2: 08:15 19 m 19 Welwyn Road East 19 m 19 Welwyn Road East

m m 2 5 2 5 t t es es W W ad ad o Ro n R n y wy elw el W W

1 5 Metres 5 Metres 6 1 6 . 1 . 1 mT Flare m Flare h Th iev iev es es La La ne Queue Interval 3: 08:30 nQueuee Interval 4: 08:45 19 m 19 Welwyn Road East m 19 Welwyn Road East

m m 2 5 2 5 t t es es d W d W oa oa R R yn yn elw elw W W

1 6 1 6 . 1 . 1 5 Metres m 5 Metres m Th Th iev iev Flare es Flare es La La ne ne

Page 4 of 7 28 November 2012 334 existing flows thieves lane welwyn rd rb.vai

Queue Interval 5: 09:00 Queue Interval 6: 09:15 19 m 19 Welwyn Road East 19 m 19 Welwyn Road East

m m 2 5 2 5 t t es es W W ad ad Ro o n n R wy y el elw W W

1 5 Metres 6 5 Metres . 1 1 6 mT . 1 Flare h Flare m iev Th es iev La es ne La ne Demand Data Graphs

No graph available

Capacity (against Time) Graphs, for each 15min Interval (07:45 - 09:15)

(QUEUEING DELAY INFORMATION OVER WHOLE PERIOD)

Capacity Vs Time (Arm A) Capacity Vs Time (Arm B) Capacity Vs Time (Arm C) 28.0 28.0 26.0

27.6 27.8 25.8

27.2 27.6 25.6

) ) )

n n n i 26.8 i 27.4 i 25.4

M M M

/ / /

h 26.4 h 27.2 h 25.2

e e e

V V V

( 26.0 ( 27.0 ( 25.0

y y y

t t t

i 25.6 i 26.8 i 24.8

c c c

a 25.2 a 26.6 a 24.6

p p p

a a a

C 24.8 C 26.4 C 24.4

24.4 26.2 24.2

24.0 26.0 24.0 07:45 08:15 08:45 09:15 07:45 08:15 08:45 09:15 07:45 08:15 08:45 09:15 Time Time Time

RFC (against Time) Graphs, for each 15min Interval (07:45 - 09:15)

(QUEUEING DELAY INFORMATION OVER WHOLE PERIOD)

RFC Vs Time (Arm A) RFC Vs Time (Arm B) RFC Vs Time (Arm C) 1.0 1.0 1.0

0.9 0.9 0.9

0.8 0.8 0.8

0.7 0.7 0.7

0.6 0.6 0.6

C C C

F 0.5 F 0.5 F 0.5

R R R 0.4 0.4 0.4

0.3 0.3 0.3

0.2 0.2 0.2

0.1 0.1 0.1

0.0 0.0 0.0 07:45 08:15 08:45 09:15 07:45 08:15 08:45 09:15 07:45 08:15 08:45 09:15 Time Time Time

Page 5 of 7 28 November 2012 334 existing flows thieves lane welwyn rd rb.vai

Start Queue (against Time) Graphs, for each 15min Interval (07:45 - 09:15)

(QUEUEING DELAY INFORMATION OVER WHOLE PERIOD)

Start Queue Vs Time (Arm A) Start Queue Vs Time (Arm B) Start Queue Vs Time (Arm C) 1.0 1.0 2.0

0.9 0.9 1.8

) 0.8 ) 0.8 ) 1.6

s s s

h 0.7 h 0.7 h 1.4

e e e

V V V

( 0.6 ( 0.6 ( 1.2

e e e

u 0.5 u 0.5 u 1.0

e e e

u 0.4 u 0.4 u 0.8

Q Q Q

t t t

r 0.3 r 0.3 r 0.6

a a a

t t t

S 0.2 S 0.2 S 0.4

0.1 0.1 0.2

0.0 0.0 0.0 07:45 08:15 08:45 09:15 07:45 08:15 08:45 09:15 07:45 08:15 08:45 09:15 Time Time Time

End Queue (against Time) Graphs, for each 15min Interval (07:45 - 09:15)

(QUEUEING DELAY INFORMATION OVER WHOLE PERIOD)

End Queue Vs Time (Arm A) End Queue Vs Time (Arm B) End Queue Vs Time (Arm C) 1.0 1.0 2.0

0.9 0.9 1.8

0.8 0.8 1.6

) ) )

s s s

h 0.7 h 0.7 h 1.4

e e e

V V V

( 0.6 ( 0.6 ( 1.2

e 0.5 e 0.5 e 1.0

u u u

e e e

u 0.4 u 0.4 u 0.8

Q Q Q

d 0.3 d 0.3 d 0.6

n n n

E 0.2 E 0.2 E 0.4

0.1 0.1 0.2

0.0 0.0 0.0 07:45 08:15 08:45 09:15 07:45 08:15 08:45 09:15 07:45 08:15 08:45 09:15 Time Time Time

Geometric Delay Graph

No Data. Please select 'Geometric Delay' in 'Principal Options' and try again. Delay (against Time) Graphs, for each 15min Interval (07:45 - 09:15)

(QUEUEING DELAY INFORMATION OVER WHOLE PERIOD)

Delay Vs Time (Arm A) Delay Vs Time (Arm B) Delay Vs Time (Arm C) 8.0 6.0 20

7.5 5.5 18 7.0

) ) )

n 6.5 n n i i 5.0 i 16

M M M

. 6.0 . .

h h h

e 5.5 e 4.5 e 14

V V V

( ( (

y 5.0 y y

a a a

l l 4.0 l 12

e 4.5 e e

D D D 4.0 3.5 10 3.5

3.0 3.0 8 07:45 08:15 08:45 09:15 07:45 08:15 08:45 09:15 07:45 08:15 08:45 09:15 Time Time Time

Page 6 of 7 28 November 2012 334 existing flows thieves lane welwyn rd rb.vai

Queues and Delay:

Geometric Delay Arrival Capacity Demand / Start End Delay Demand Ped Flow (Veh.Min / Delay Segment Arm (Veh / Capacity Queue Queue (Veh.Min / (Veh / Min) (Ped / Min) Time (Min / Min) (RFC) (Veh) (Veh) Time Segment) Veh) Segment)

A 5.42 26.17 0.207 - 0.0 0.3 3.8 - 0.048 Segment : 1 - B 4.83 27.43 0.176 - 0.0 0.2 3.1 - 0.044 07:45 to 08:00 C 9.20 25.02 0.368 - 0.0 0.6 8.4 - 0.063 A 6.47 25.55 0.253 - 0.3 0.3 5.0 - 0.052 Segment : 2 - B 5.77 27.11 0.213 - 0.2 0.3 4.0 - 0.047 08:00 to 08:15 C 10.98 24.83 0.442 - 0.6 0.8 11.5 - 0.072 A 7.93 24.71 0.321 - 0.3 0.5 6.9 - 0.060 Segment : 3 - B 7.06 26.67 0.265 - 0.3 0.4 5.3 - 0.051 08:15 to 08:30 C 13.45 24.56 0.548 - 0.8 1.2 17.4 - 0.090 A 7.93 24.70 0.321 - 0.5 0.5 7.1 - 0.060 Segment : 4 - B 7.06 26.67 0.265 - 0.4 0.4 5.4 - 0.051 08:30 to 08:45 C 13.45 24.56 0.548 - 1.2 1.2 18.0 - 0.090 A 6.47 25.54 0.253 - 0.5 0.3 5.2 - 0.052 Segment : 5 - B 5.77 27.11 0.213 - 0.4 0.3 4.1 - 0.047 08:45 to 09:00 C 10.98 24.83 0.442 - 1.2 0.8 12.3 - 0.072 A 5.42 26.15 0.207 - 0.3 0.3 4.0 - 0.048 Segment : 6 - B 4.83 27.43 0.176 - 0.3 0.2 3.3 - 0.044 09:00 to 09:15 C 9.20 25.02 0.368 - 0.8 0.6 9.0 - 0.063

Queuing Delay Information Over Whole Period

Total Demand Queueing Delay Inclusive Queueing Delay Arm (Veh) (Veh/Hr) (Min) (Min/Veh) (Min) (Min/Veh) A 594.6 396.4 32.0 0.05 32.0 0.05 B 529.9 353.3 25.2 0.05 25.2 0.05 C 1008.9 672.6 76.6 0.08 76.6 0.08 ALL 2133.5 1422.3 133.8 0.06 133.8 0.06

Delay is that occuring only within the time period. Inclusive delay includes delay suffered by vehicles that are still queueing after the end of the time period. These will only be significantly different if there is a large queue remaining at the end of the time period.

Accident Data

No Data, please select the 'Accident Analysis' option in 'Principal Options' and try again. Accident Results

No Data, please select the 'Accident Analysis' option in 'Principal Options' and try again.

Page 7 of 7 28 November 2012 334 existing flows thieves lane welwyn rd with dev rb.vai

ARCADY 6 GUI Version: 6.2 AG Analysis Program: Release 7.0 (FEBRUARY 2010) (c) Copyright TRL Limited, 2004 Adapted from ARCADY/3 which is Crown Copyright by permission of the controller of HMSO For sales and distribution information, program advice and maintenance, contact: TRL Limited Tel: +44 (0)1344 770758 Crowthorne House Fax:+44 (0)1344 770864 Nine Mile Ride Email: software@ trl.co.uk Wokingham, Berks. Web:www.trlsoftware.co.uk RG40 3GA, UK The user of this computer program for the solution of an engineering problem is in no way relieved of their responsibility for the correctness of the solution

Run Information Run with file:- z:\EAS\Current Projects\Hertford Thieves Lane\Analysis\ARCADY\existing flows thieves lane welwyn rd with dev rb.vai At: 15:59:27 on Wednesday, November 28, 2012 Mode: Drive On The Left Units: Metric

Arm Labelling

Arm Full Arm Names Arm A Thieves Lane Arm B Welwyn Road West Arm C Welwyn Road East

Flow Scaling Factor

Arm Flow Scaling Factor (%) Arm A 100 Arm B 100 Arm C 100

File Properties

Run Title existing layout Location Thieves Lane/Welwyn Road RB Date 28/11/2012 Client Croudace Enumerator Job Number 334 Status Draft 1 Description

Page 1 of 7 28 November 2012 334 existing flows thieves lane welwyn rd with dev rb.vai

Errors and Warnings

[No errors or warnings] Geometric Data

Data Item Arm A Arm B Arm C Approach Road Half-Width (m) 3.80 3.95 3.95 Entry Width (m) 7.40 6.80 5.70 Flare Length (m) 16.10 25.00 19.00 Entry Radius (m) 33.70 106.50 38.70 Inscribed Circle Diameter (m) 29.50 27.70 30.90 Entry Angle (degrees) 12.00 27.50 17.00 Slope 0.732 0.720 0.682 Intercept (PCU/Min) 32.240 31.969 28.614

Page 2 of 7 28 November 2012 334 existing flows thieves lane welwyn rd with dev rb.vai

Junction Diagram: (View Extent = 40m) 19 m 19 Welwyn Road East

m 2 5 t es d W oa R yn elw W

5 Metres 1 6 . 1 Flare m Th iev Angles Between Arms (Degrees): Arm A(120) Arm B(120) Armes C(120) La ne Demand Data

Demand Profiles are Synthesised using ODTAB Data Period of interest (for Queue and Delay calculations): 07:45 to 09:15 Length of Time Period: 90 min Length of Time Segment: 15 min

Total Traffic Demand (Vehicles/Hour) for Demand Set: forecast flows

From/To Arm A Arm B Arm C Arm A 0.0 276.0 222.0 Arm B 137.0 0.0 290.0 Arm C 406.0 351.0 0.0

Entry Flow Data for Demand Set: forecast flows Number of Minutes From Start When Rate of flow (Veh/Min) Arms Flow Starts To Top of Peak is Flow Stops Before Peak At Top of Peak After Peak Rise Reached Falling Arm A 15.00 45.00 75.00 6.22 9.34 6.22 Arm B 15.00 45.00 75.00 5.34 8.01 5.34 Arm C 15.00 45.00 75.00 9.46 14.19 9.46

Turning Proportions

ODTAB Demand Data type is used, no turning proportions available.

Heavy Vehicle Percentages for Demand Set: forecast flows

Default vehicle percentages

Time Period From/To Arm A Arm B Arm C Arm A 10.0 10.0 10.0 07:45 to 09:15 Arm B 10.0 10.0 10.0 Arm C 10.0 10.0 10.0

Page 3 of 7 28 November 2012 334 existing flows thieves lane welwyn rd with dev rb.vai

Queue Diagrams: (View Extent = 40m)

Queue Length Colour Mean Queue 5 th % ile 90 th % ile 95 th % ile

Start Time: 07:45---> End Time: 09:15

Queue Interval 1: 08:00 Queue Interval 2: 08:15 19 m 19 Welwyn Road East 19 m 19 Welwyn Road East

m m 2 5 2 5 t t es es W W ad ad o Ro n R n y wy elw el W W

1 5 Metres 5 Metres 6 1 6 . 1 . 1 mT Flare m Flare h Th iev iev es es La La ne Queue Interval 3: 08:30 nQueuee Interval 4: 08:45 19 m 19 Welwyn Road East m 19 Welwyn Road East

m m 2 5 2 5 t t es es d W d W oa oa R R yn yn elw elw W W

1 6 1 6 . 1 . 1 m m 5 Metres Th 5 Metres Th iev iev Flare es Flare es La La ne ne

Page 4 of 7 28 November 2012 334 existing flows thieves lane welwyn rd with dev rb.vai

Queue Interval 5: 09:00 Queue Interval 6: 09:15 19 m 19 Welwyn Road East 19 m 19 Welwyn Road East

m 5 m 2 2 5 t t es es W W ad ad Ro o n n R wy y el elw W W

1 6 5 Metres . 1 5 Metres m 1 6 Th . 1 Flare ie Flare mT ve hi s L ev an es e La ne Demand Data Graphs

No graph available

Capacity (against Time) Graphs, for each 15min Interval (07:45 - 09:15)

(QUEUEING DELAY INFORMATION OVER WHOLE PERIOD)

Capacity Vs Time (Arm A) Capacity Vs Time (Arm B) Capacity Vs Time (Arm C) 28.0 28.0 25.0

27.6 27.8 24.9

27.2 27.6 24.8

) ) )

n n n i 26.8 i 27.4 i 24.7

M M M

/ / /

h 26.4 h 27.2 h 24.6

e e e

V V V

( 26.0 ( 27.0 ( 24.5

y y y

t t t

i 25.6 i 26.8 i 24.4

c c c

a 25.2 a 26.6 a 24.3

p p p

a a a

C 24.8 C 26.4 C 24.2

24.4 26.2 24.1

24.0 26.0 24.0 07:45 08:15 08:45 09:15 07:45 08:15 08:45 09:15 07:45 08:15 08:45 09:15 Time Time Time

RFC (against Time) Graphs, for each 15min Interval (07:45 - 09:15)

(QUEUEING DELAY INFORMATION OVER WHOLE PERIOD)

RFC Vs Time (Arm A) RFC Vs Time (Arm B) RFC Vs Time (Arm C) 1.0 1.0 1.0

0.9 0.9 0.9

0.8 0.8 0.8

0.7 0.7 0.7

0.6 0.6 0.6

C C C

F 0.5 F 0.5 F 0.5

R R R 0.4 0.4 0.4

0.3 0.3 0.3

0.2 0.2 0.2

0.1 0.1 0.1

0.0 0.0 0.0 07:45 08:15 08:45 09:15 07:45 08:15 08:45 09:15 07:45 08:15 08:45 09:15 Time Time Time

Page 5 of 7 28 November 2012 334 existing flows thieves lane welwyn rd with dev rb.vai

Start Queue (against Time) Graphs, for each 15min Interval (07:45 - 09:15)

(QUEUEING DELAY INFORMATION OVER WHOLE PERIOD)

Start Queue Vs Time (Arm A) Start Queue Vs Time (Arm B) Start Queue Vs Time (Arm C) 1.0 1.0 2.0

0.9 0.9 1.8

) 0.8 ) 0.8 ) 1.6

s s s

h 0.7 h 0.7 h 1.4

e e e

V V V

( 0.6 ( 0.6 ( 1.2

e e e

u 0.5 u 0.5 u 1.0

e e e

u 0.4 u 0.4 u 0.8

Q Q Q

t t t

r 0.3 r 0.3 r 0.6

a a a

t t t

S 0.2 S 0.2 S 0.4

0.1 0.1 0.2

0.0 0.0 0.0 07:45 08:15 08:45 09:15 07:45 08:15 08:45 09:15 07:45 08:15 08:45 09:15 Time Time Time

End Queue (against Time) Graphs, for each 15min Interval (07:45 - 09:15)

(QUEUEING DELAY INFORMATION OVER WHOLE PERIOD)

End Queue Vs Time (Arm A) End Queue Vs Time (Arm B) End Queue Vs Time (Arm C) 1.0 1.0 2.0

0.9 0.9 1.8

0.8 0.8 1.6

) ) )

s s s

h 0.7 h 0.7 h 1.4

e e e

V V V

( 0.6 ( 0.6 ( 1.2

e 0.5 e 0.5 e 1.0

u u u

e e e

u 0.4 u 0.4 u 0.8

Q Q Q

d 0.3 d 0.3 d 0.6

n n n

E 0.2 E 0.2 E 0.4

0.1 0.1 0.2

0.0 0.0 0.0 07:45 08:15 08:45 09:15 07:45 08:15 08:45 09:15 07:45 08:15 08:45 09:15 Time Time Time

Geometric Delay Graph

No Data. Please select 'Geometric Delay' in 'Principal Options' and try again. Delay (against Time) Graphs, for each 15min Interval (07:45 - 09:15)

(QUEUEING DELAY INFORMATION OVER WHOLE PERIOD)

Delay Vs Time (Arm A) Delay Vs Time (Arm B) Delay Vs Time (Arm C) 9.0 7.0 20

8.5 6.5 8.0 6.0

) ) )

n 7.5 n n i i i 15

M M 5.5 M

. 7.0 . .

h h h

e 6.5 e 5.0 e

V V V

( ( (

y 6.0 y y 4.5

a a a

l l l 10

e 5.5 e e

D D 4.0 D 5.0 3.5 4.5

4.0 3.0 5 07:45 08:15 08:45 09:15 07:45 08:15 08:45 09:15 07:45 08:15 08:45 09:15 Time Time Time

Page 6 of 7 28 November 2012 334 existing flows thieves lane welwyn rd with dev rb.vai

Queues and Delay:

Geometric Delay Arrival Capacity Demand / Start End Delay Demand Ped Flow (Veh.Min / Delay Segment Arm (Veh / Capacity Queue Queue (Veh.Min / (Veh / Min) (Ped / Min) Time (Min / Min) (RFC) (Veh) (Veh) Time Segment) Veh) Segment)

A 6.25 26.10 0.239 - 0.0 0.3 4.6 - 0.050 Segment : 1 - B 5.36 27.06 0.198 - 0.0 0.2 3.6 - 0.046 07:45 to 08:00 C 9.50 24.84 0.382 - 0.0 0.6 9.0 - 0.065 A 7.46 25.47 0.293 - 0.3 0.4 6.1 - 0.055 Segment : 2 - B 6.40 26.67 0.240 - 0.2 0.3 4.7 - 0.049 08:00 to 08:15 C 11.34 24.61 0.461 - 0.6 0.8 12.4 - 0.075 A 9.14 24.61 0.371 - 0.4 0.6 8.6 - 0.064 Segment : 3 - B 7.84 26.13 0.300 - 0.3 0.4 6.3 - 0.055 08:15 to 08:30 C 13.89 24.30 0.572 - 0.8 1.3 19.1 - 0.096 A 9.14 24.59 0.372 - 0.6 0.6 8.8 - 0.065 Segment : 4 - B 7.84 26.13 0.300 - 0.4 0.4 6.4 - 0.055 08:30 to 08:45 C 13.89 24.30 0.572 - 1.3 1.3 19.8 - 0.096 A 7.46 25.45 0.293 - 0.6 0.4 6.4 - 0.056 Segment : 5 - B 6.40 26.66 0.240 - 0.4 0.3 4.8 - 0.049 08:45 to 09:00 C 11.34 24.61 0.461 - 1.3 0.9 13.3 - 0.076 A 6.25 26.08 0.240 - 0.4 0.3 4.8 - 0.050 Segment : 6 - B 5.36 27.06 0.198 - 0.3 0.2 3.8 - 0.046 09:00 to 09:15 C 9.50 24.84 0.382 - 0.9 0.6 9.5 - 0.065

Queuing Delay Information Over Whole Period

Total Demand Queueing Delay Inclusive Queueing Delay Arm (Veh) (Veh/Hr) (Min) (Min/Veh) (Min) (Min/Veh) A 685.5 457.0 39.3 0.06 39.3 0.06 B 587.7 391.8 29.6 0.05 29.6 0.05 C 1042.0 694.6 83.1 0.08 83.1 0.08 ALL 2315.1 1543.4 152.0 0.07 152.0 0.07

Delay is that occuring only within the time period. Inclusive delay includes delay suffered by vehicles that are still queueing after the end of the time period. These will only be significantly different if there is a large queue remaining at the end of the time period.

Accident Data

No Data, please select the 'Accident Analysis' option in 'Principal Options' and try again. Accident Results

No Data, please select the 'Accident Analysis' option in 'Principal Options' and try again.

Page 7 of 7