Hobsonville Corridor Precinct
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Hobsonville Corridor Precinct Technical Transportation Assessment June 2017 Project: Hobsonville Corridor Precinct Title: Technical Transportation Assessment Document Reference: P:\ATSP Auckland Strategy and Policy\062 Transport Assessment, Spine Road, Hobsonville Business Area\4.0 Reporting\R1A170620.docx Prepared by: Qing Li, Angie Crafer Project Manager Angie Crafer Reviewed by: Angie Crafer Revisions: Date Status Reference Approved by Initials 28 June 2017 A R1A170620 A Crafer The drawings, information and data recorded in this document (the information) are the property of Flow Transportation Specialists Ltd. This document and the information are solely for the use of the authorised recipient and this document may not be used, copied or reproduced in whole or part for any purpose other than that for which it was supplied by Flow Transportation Specialists Ltd. Flow Transportation Specialists Ltd makes no representation, undertakes no duty and accepts no responsibility to any third party who may use or rely upon this document or the information. Hobsonville Corridor Precinct Technical Transportation Assessment i EXECUTIVE SUMMARY Flow Transportation Specialists Ltd has been engaged by Auckland Transport to provide transport planning and traffic engineering advice on the transport network associated with the Hobsonville Corridor Precinct. Traffic models have been developed to assess the potential impacts of a completed “Spine Road” on the surrounding transport network. Relative to the Do Minimum scenario without the complete Spine Road, a scenario with a completed Spine Road is predicted to result in a number of key, strategic transportation benefits, including the following: Improved network resilience. A completed Spine Road provides an alternative main route running in parallel to Hobsonville Road. This will result in network resilience benefits when either Hobsonville Road or SH18 are subject to temporary or unplanned closures or restrictions, or during an extreme traffic event. Improved connectivity. A connected Spine Road will provide improved connectivity within the precinct, and remove the need for all trips to use Hobsonville Road. This improved connectivity will benefit general traffic, pedestrians and cyclists, and potentially public transport users should some bus services use the Spine Road. Reduced traffic on Hobsonville Road. The proposed Spine Road is predicted to have significantly lower traffic volumes on Hobsonville Road than with an incomplete Spine Road, and this will lead to reduced conflict with existing vehicle crossings on the south side of this street. This in turn may provide greater redevelopment potential on the south side of this corridor, which is zoned Mixed Housing Urban within the AUP (OiP). The reduced traffic volumes on this corridor would also lead to the three following key strategic benefits. Improved opportunities for bus priority measures on Hobsonville Road. Lower general traffic on Hobsonville Road with the completed Spine Road scenario will provide greater opportunities for additional lanes on this road to be dedicated to public transport, facilitating this corridor’s proposed FTN status. The lower traffic volumes will additionally improve pedestrian accessibility to this public transport corridor, as below. Improved walking and cycling environment on Hobsonville Road. The lower traffic volumes on Hobsonville Road will in general improve the walking and cycling environment on this corridor, and reduce conflict between active mode users and traffic. The reduced traffic will additionally allow more opportunities for safe crossing locations of this road, better connecting the residential catchment on the south/east side of the road with employment on the north/west side, as well as connecting users to bus stops. Reduced severance to Hobsonville Primary School. Related to the walking and cycling effects above but requiring special mention, Hobsonville Primary School is severed from its existing residential catchment by Hobsonville Road, and safe crossing opportunities for school children are limited to signalised crossings. The reduced traffic on Hobsonville Road that the completed Spine Road provides will result in reduced conflict between pedestrians and vehicles, as well as improved opportunities for additional safe crossings. Hobsonville Corridor Precinct Technical Transportation Assessment ii Three different connection options for the eastern end of the complete Spine Road scenario have been considered. The analysis of these options has identified that they will result in similar effects on the road network within the Hobsonville Corridor Precinct, provided that the identified transport provisions can be provided at connections on Brigham Creek Road at the SH18 interchange. Hobsonville Corridor Precinct Technical Transportation Assessment iii CONTENTS 1 INTRODUCTION ................................................................................................................................ 1 2 ASSESSMENT METHODOLOGY ......................................................................................................... 2 Study Objectives ..................................................................................................................... 2 Traffic Model .......................................................................................................................... 3 Hobsonville Corridor Precinct Network Assumptions ............................................................ 3 Do Minimum Network Assumptions ............................................................................ 3 Modelled Spine Road Network .............................................................................................. 5 Hobsonville Corridor Precinct Land Use Assumptions and Vehicle Trip Rates ...................... 8 3 TRANSPORT ASSESSMENT .............................................................................................................. 10 Traffic Flows ......................................................................................................................... 12 Strategic Transport Benefits of the Spine Road ................................................................... 16 Transportation Effects of a Completed Spine Road ............................................................. 17 Effects on Public Transport, Pedestrians and Cyclists ................................................ 17 Effects on General Traffic ........................................................................................... 18 Transport effects on the existing Hobsonville Primary School .................................. 19 Connectivity Implications of Spine Road Options ................................................................ 20 Connections to the eastern side of Brigham Creek Road .......................................... 20 Connecting the Spine Road to Brigham Creek Road at the SH18 off-ramp roundabouts .................................................................................................................................... 20 Conclusions .......................................................................................................................... 21 APPENDICES APPENDIX A PREDICTED TRAFFIC VOLUMES APPENDIX A ASSESSMENT OF SPINE ROAD OPTIONS APPENDIX C SIDRA LAYOUTS Hobsonville Corridor Precinct Technical Transportation Assessment 1 1 INTRODUCTION Flow Transportation Specialists Limited (Flow) has been commissioned by Auckland Transport to provide transport planning and traffic engineering advice in relation to a technical assessment of the impacts on the existing road network in relation to development to the north of Hobsonville Road within the Hobsonville Corridor Precinct, and the provision of a Spine Road as proposed in Plan Change 14 to the Auckland Council Plan - Waitakere Section (“PC14”). The indicative road network from PC14 is shown in the Hobsonville Corridor Precinct Plan that was included in the Proposed Auckland Unitary Plan (“PAUP”), as shown in Figure 1 below; however, this was not carried forward into the Auckland Unitary Plan – Operative in Part (“AUP (OiP)”). Figure 1: Precinct Plan 1: Hobsonville Corridor Precinct Plan in the PAUP The area comprises approximately 70 ha of land between Hobsonville Road, SH18 and Brigham Creek Road that is predominantly zoned Business – Light Industry and is potentially able to be subdivided under the provisions of Section E38 Subdivision of the AUP (OiP) into sites that are 1,000 to 2,000 m2 in net area; with a 20 m wide frontage. The provisions also enable provision of entrance and accessways to service rear sites with minimum widths and lengths provided for these access ways. Through the process of subdivision all new sites will potentially have vehicle access to either the existing public road network (subject to vehicle access standards in Sections E38 and E27 Transport) or new roads constructed as part Hobsonville Corridor Precinct Technical Transportation Assessment 2 of any subdivision. There is guidance in Section E38 in relation to the provision of new roads but it is not clear that it will result in the delivery of a completed Spine Road as indicated in PC14 and deliver the benefits that a completed Spine Road was expected to provide. It is also noted that the northern side of Hobsonville Road is a Limited Access Road and Brigham Creek Road has a Vehicle Access Restriction Control (Motorway Interchange Control) under the AUP (OiP) on both sides