Transportation Assessment Report for Proposed Apartment Development
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Transportation Assessment Report (incl. Preliminary Travel Plan, DMURS Statement of Consistency & Independent Stage 1 Road Safety/Quality Audit) for Proposed Apartment Development At Former Europa Garage Site, Newtown Avenue, Blackrock, Co. Dublin. SUBMISSION ISSUE 1st Floor, Apollo Building, Dundrum Road, Dundrum, Dublin 14 Tel/fax: +353 1 292 1941, E-mail: [email protected], Web: www.nrb.ie Registered in Ireland No. 491679 Contents Page Section Description 2 -- Executive Summary 4 1.0 Introduction Existing Conditions, Development Proposals & Car 7 2.0 Parking 15 3.0 Traffic - Trip Generation Assignment and Distribution 16 4.0 Traffic Impact - Traffic Capacity Analysis Issues Raised by DLRCC Roads/Transportation Section in 19 5.0 Response to Pre-App Submission 23 6.0 Conclusions Appendices...... A Proposed Development – Layout & Access B Raw Traffic Survey Data C TRICS Trip Generation Output D Traffic Surveys, Trip Distribution & Network Traffic Flow Diagrams E PiCADY Junction Capacity Model Output - Proposed Site Access F Independent Stage 1 Road Safety Audit including Quality Audit G Preliminary Mobility Management Plan (Travel Plan) H DMURS Statement of Consistency I Letter of Confirmation from Go-Car TA - Blackrock Apartments 19-079/ER Nov 2020 Page 1 of 23 EXECUTIVE SUMMARY NRB Consulting Engineers Ltd were appointed to address the Traffic & Transportation issues associated with a planning application for a Residential Apartment Development at Newtown Avenue, Blackrock, Co. Dublin. The proposed development consists of 101 private residential apartments, with secure off-street parking areas for bicycles & cars, along with bins storage and all associated site works. In terms of vehicles, the site is to be accessed by way of a simple priority access located on Newtown Avenue, replacing the established access gateway serving the site, providing for a well designed, safe and appropriate form of access. An enclosed basement, accessed by way of a 2-way ramp located to the NW corner of the site, is included in the plans. This area incorporates both car & bicycle parking, lift/stair cores and also includes refuse storage/management areas. The parking quantum provided is further considered within this Report. Being located in close proximity to two Dart Stations, adjacent a busy High Quality Bus Corridor with multi-directional bus stops and with high quality pedestrian and cyclist provision, the site is well placed to take advantage of non-car modes of travel. This Transportation Assessment Report (TA) has been prepared to address the Traffic and Transportation issues associated with the proposal, the capacity of the existing road network and the impact of the increased scale of development locally, conscious that the site use will generate very low traffic volumes in the context of the busy road network in the area. The Report has been prepared in accordance with TII’s Traffic & Transportation Assessment Guidelines and addresses the worst case traffic impact of the proposal. Comprehensive classified turning movement surveys of the existing affected roads and junctions were carried out during the weekday AM and PM Peak Hours in 2019, in normal school term. These surveys formed the basis of the study and have been supplemented by additional observational Surveys, following changes to Seapoint Avenue, with the new Cyclist Facilities in place. The analysis includes the effects of the existing traffic on the local roads and assesses the impact during the traditional peak commuter peaks periods in accordance with Traffic & Transportation Assessment Guidelines. TA - Blackrock Apartments 19-079/ER Nov 2020 Page 2 of 23 The Transportation Assessment confirms that the road network and the proposed vehicular access junction arrangement is more than adequate to accommodate the worst case traffic associated with the facility. The assessment also confirms that the construction and full occupation of the scheme will have an absolutely negligible & unnoticeable impact upon the operation of the adjacent road network. Detailed analysis also confirms that there is adequate capacity in the proposed access junction to accommodate the low levels of traffic associated with the development and occupation of the site. The assessment includes a Preliminary Mobility Management Plan (MMP or Travel Plan) for the site which is included and appended as a separate report. We have also prepared a Statement of Consistency with DMURS and confirm that the layout is compliant with the requirements of DMURS This is included and appended as a separate report. An independent Stage 1 Road Safety Audit including Quality Audit has now been undertaken and is included as Appendix F. Based on our studies, we believe that there are no adverse traffic/transportation capacity or operational issues associated with the construction and occupation of the proposed development that would prevent planning permission being granted by An Bord Pleanála. TA - Blackrock Apartments 19-079/ER Nov 2020 Page 3 of 23 1.0 INTRODUCTION 1.1 This Transportation Assessment (TA) has been prepared by NRB Consulting Engineers Ltd and addresses the Traffic/ Transportation issues arising from the proposed 101 Unit Private Residential Apartment development on the site at Newtown Avenue, Blackrock, Co. Dublin. 1.2 The local area and the subject site, is already a long-established destination, containing commercial, retail and residential development and in these terms has very well established Transportation demand and characteristics in its own right. The proposed development on a prominent & highly accessible site should be considered in this context. A site location plan for the site is included below as Figure 1.1; Figure 1.1 - Site Location 1.3 In describing the Receiving Environment and the Proposed Future Environment, this report addresses the following aspects of the proposed development: • Relative Small Scale of the development in the context of the busy road network (Reflected in the Low Traffic Generation of the Development), • Location of the development almost equidistant between two Dart Stations, TA - Blackrock Apartments 19-079/ER Nov 2020 Page 4 of 23 • Location adjacent a Quality Bus Corridor with high frequency services and the services and facilities available at the nearby Employment Sites and Local Shopping Centre, • Traffic & Transportation impact, • Capacity of the proposed vehicular access arrangement to accommodate the worst-case development traffic flows, • Pedestrian and cyclist permeability & promotion, • Capacity of the Existing Road Network, • Adequacy and safety of the existing roads and junctions locally, within the area of influence. • Impact upon the adjacent affected junctions Locally within Blackrock. 1.4 A review of the Road Safety Authority (RSA) online collision database indicates that there are no significant accidents on the affected stretches of road network surrounding the site. An extract from the RSA on-line collisions record is included below as Figure 1.2. Figure 1.2 - Extract from RSA On-Line Record of Traffic Collisions TA - Blackrock Apartments 19-079/ER Nov 2020 Page 5 of 23 1.5 The Recommendations contained within this Transportation Assessment are based on the following sources of information and industry-standard practices; - • TII Traffic & Transport Assessment Guidelines, • Design Manual for Urban Roads and Streets, • Recent Traffic Survey Data, • Additional Traffic Survey Data following the recent traffic and cyclist changes to Seapoint Ave • Relevant Design Guidance, • Our experience in assessing the impact of Developments of this Nature, and • Site Visits and Observations. 1.6 The Report has been prepared in accordance with the requirements of the TII's Traffic & Transport Assessment Guidelines. These are the professional Guidelines used to assess the impact of developments on public roads. 1.7 The assessment includes a Preliminary MMP/Travel Plan for the site which is included as a separate report which is appended to this report. 1.8 We have also included a Statement of Consistency with DMURS appended as a separate report. 1.9 An independent Stage 1 Road Safety Audit including Quality Audit has now been undertaken and is included as Appendix F. TA - Blackrock Apartments 19-079/ER Nov 2020 Page 6 of 23 2.0 EXISTING CONDITIONS, DEVELOPMENT PROPOSALS & CAR PARKING 2.1 The development, consisting of a total of 101 Private Residential Apartment Units, constitutes an application to An Bord Pleanála for permission for a strategic housing development at Newtown Avenue, Blackrock, Co. Dublin. The application site is currently cleared and is undeveloped, being known locally as 'The Europa Site'. 2.2 The development comprises 101 self-contained Apartments constructed in separate blocks over basement, which will contain secure off-street parking areas for bicycles & cars, along with bins storage and all associated site works. A total of 73 car parking spaces (including visitor, Go-Car and Mobility Impaired) are provided in the basement. A total of 194 Secure Bicycle Parking Spaces are provided in the basement for residents, with 50 visitor cycle parking stands at surface level. 2.3 The site is bound to the north and east by Newtown Avenue, and to the west and south by established private residential development. 2.4 Newtown Avenue which bounds the site along its northern and eastern perimeters is a one-way street (north bound) past the site, and is provided with footpaths and cycle lanes on both sides. It has an on-street advisory cycle lane for north/westbound cyclists and it is also provided with a contra-flow dedicated off street cycle lane for south/eastbound cyclists. It is subject to an urban 50kph speed restriction along its length, though it should be noted that the measured 85%ile ambient passing traffic speed was recorded at 37kph during the traffic survey element of our commission. 2.5 At the site, Newtown Avenue carries a Weekday 8-9AM Peak Hour Traffic Flow of ~343 Passenger Car Units (PCUs) and a Weekday 5-6PM Peak Hour Traffic Flow of ~130 PCUs. These are considered very low traffic volumes, in the context of general city commuter traffic conditions.