A21 Lamberhurst to Hastings
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A21 Lamberhurst to Hastings Average Speed Camera Study May 2015 Highways England A21 Lamberhurst to Hastings Issue and revision record Revision Date Originator Checker Approver Description First Issue for A 21 April 2015 Internal Use Only B 22 May 2015 Second Issue C 28 May 2015 Third Issue This document is issued for the party which commissioned it We accept no respons bility for the consequences of this and for specific purposes connected with the above-captioned document being relied upon by any other party, or being used project only. It should not be relied upon by any other party or for any other purpose, or containing any error or omission which used for any other purpose. is due to an error or omission in data supplied to us by other parties. This document contains confidential information and proprietary intellectual property. It should not be shown to other parties without consent from us and from the party which commissioned it. A21 Lamberhurst to Hastings Content Chapter Title Page Executive Summary i 1. Introduction 1 1.1 Objective __________________________________________________________________________ 1 2. Existing Conditions 3 2.1 Background ________________________________________________________________________ 3 2.2 Speed Limits _______________________________________________________________________ 3 2.3 Layout and Highway Cross-Section _____________________________________________________ 3 2.4 Personal Injury Collision Data __________________________________________________________ 6 2.5 Associated Schemes for the A21 corridor _________________________________________________ 6 2.5.1 Planned (funded) Works ______________________________________________________________ 7 3. Proposed ASC Scheme 8 3.1 Overview of Proposed Operating System _________________________________________________ 8 4. Proposed Camera Location Sites 10 4.1 Camera Site Locations ______________________________________________________________ 10 4.2 Delivery Design and Engineering considerations __________________________________________ 15 4.2.1 Highway Land _____________________________________________________________________ 15 4.2.2 Power Supply _____________________________________________________________________ 15 4.2.3 Street Lighting _____________________________________________________________________ 15 4.2.4 Communications ___________________________________________________________________ 15 4.2.5 Utilities (Statutory Undertakers Plant) Assessment _________________________________________ 15 4.2.6 Structural Assessment (Desktop) ______________________________________________________ 16 4.2.7 Environmental Assessment (Desktop) __________________________________________________ 17 4.2.8 Geotechnical Assessment (Desktop) ___________________________________________________ 20 4.2.9 Sight Line Assessment ______________________________________________________________ 21 4.2.10 Road Safety and Traffic Engineering Assessment _________________________________________ 21 4.2.11 Speed limit signs ___________________________________________________________________ 21 4.2.12 TechMAC maintenance requirements - vehicle hardstanding and access for operatives. ___________ 22 4.2.13 Consultation ______________________________________________________________________ 24 5. ASC Complimentary Measures 25 5.1 Identified schemes to enhance Speed Limits and proposed Average Speed Cameras _____________ 25 6. Preliminary Scheme Costs 27 6.1 Capital Expenditure Costs (Equipment Supply, Installation and Commissioning) __________________ 27 6.2 Supplementary Construction Costs _____________________________________________________ 28 6.3 Design for Construction Considerations _________________________________________________ 29 6.4 Maintenance ______________________________________________________________________ 30 6.5 Annual Costs and Whole Life Costs ____________________________________________________ 30 7. Conclusions and Recommendations 31 300274SS05/MAC/ITD/001/C 28 May 2015 A21 Lamberhurst to Hastings Appendices 32 Appendix A. Project Brief ______________________________________________________________________ 33 Appendix B. Vysionics camera and infra-red pole and foundation details __________________________________ 34 Appendix C. General Layout Drawings (SS-15-8327-1011 – 23) ________________________________________ 35 Appendix D. Camera Site Layout Drawings (SS-15-8327-2601-34) and Typical Grass Grid Hardstanding Detail for Maintenance Vehicles (SS-15-8327-100) ________________________________________________ 36 Appendix E. Extracts from Area 4 BBMMjv ‘MAYRISE’ Database _______________________________________ 37 Appendix F. Desktop Environmental Assessment ___________________________________________________ 38 Appendix G. BBMMjv LNMS Scheme Drawing Numbers LNMS/13-7058 1201 to 1207 _______________________ 39 Appendix H. BBMMjv A21 ASC Scheme Estimate ___________________________________________________ 40 300274SS05/MAC/ITD/001/C 28 May 2015 A21 Lamberhurst to Hastings Executive Summary The A21 route south of the Lamberhurst Bypass is rural in nature, serving the main urban areas of Flimwell, Hurst Green, Robertsbridge, John’s Cross and, Woodman’s Green. It also serves as the main access route to Hastings from London and the north. Highways England has a desire to install average speed cameras (ASCs) along part of the A21 corridor over a distance of approximately 26km. Further to discussions between prospective supplier, Vysionics ITS, Highways England and Balfour Beatty Mott MacDonald joint venture, Vysionics ITS has prepared a budgetary proposal for a SPECS3 VECTOR speed management and enforcement scheme for the A21. The SPECS3 VECTOR solution would be used to monitor and control vehicle speeds on the A21 between Lamberhurst and Hastings. The scheme comprises the provision of 34 ASCs placed along the route, essentially at locations where there is a change in local speed limit. Principally, the proposed ASC locations are suitable, however, a number of matters need to be addressed further prior to the scheme being implemented. Consultation - Further structured consultation with key stakeholders (local MP, Sussex Safer Roads Partnership, local parish councils and adjoining property owners where ASCs are proposed to be situated) is required. Environmental - There are a number of matters that will be required to be addressed further including the application of the Record of Determination / Notification of Determination (ROD/NOD) process and the preparation of an appropriate assessment screening matrix (AASM). Part of the study area is also close to an area of outstanding natural beauty (AONB) and there are likely to be impacts in terms of cultural heritage and nature conservation. This will therefore require further environmental assessment reporting as the scheme progresses. Geotechnical - The majority of the cutting slopes are likely to involve some minor cutting and re-grading of the slope and installation of some form of erosion protection and/or reinforcement. The foundations in embankments will be more complicated, which may require placing additional fill materials or increasing the depth of foundations. Therefore further geotechnical assessment reporting will be required as the scheme progresses. Land ownership - Initial assessment of land boundary information suggests that land required for works is within the public highway and therefore no land acquisition is considered necessary. 300274SS05/MAC/ITD/001/C 28 May 2015 i A21 Lamberhurst to Hastings . Structural Assessment - Preliminary information supplied by Vysionics which has been reviewed internally by BBMMjv is regarded as being appropriate to task. Further detailed structural assessment of the camera foundations and mountings at individual sites will be required as the scheme progresses. Furthermore, as the current intention is to provide ASCs on passively safe posts, on the whole, no significant provision of new vehicle road restraint systems (VRRS) is required. Statutory Undertakers’ Plant/Apparatus - The principal concern is the availability or requirement to provide a robust, independent power supply to a number of individual camera site locations. This is likely to require the provision of additional ducting and cabling. Communications - This will be required between the individual camera locations in order to process speed data ascertained from the individual ASC sites. Historically, this has been achieved through fixed communications (e.g. BT phone line). However, it is understood that there is strong mobile communication signal available from at least one network. Therefore, the proposed ASC operation will communicate by means of a 3G data SIM, built into the camera head. Maintenance - Further consideration will need to be given in terms of the provision of vehicle hardstanding such that operatives can periodically access the ASC sites should they need to do so. Existing Speed Limits - There are a number of current local proposals through some of the settlements on the A21 route (e.g. Hurst Green, Whatlington) where existing speed limits are to be reviewed / revised. Furthermore, this proposed ASC scheme will require the provision of additional signing to advise drivers of the enforcement measures in place. Therefore, coordination will be needed to ensure that changes to signing are complimentary and should be addressed through further consultation with Sussex Safer Roads Partnership. 300274SS05/MAC/ITD/001/C 28 May 2015 ii A21 Lamberhurst to Hastings 1. Introduction