Broxbourne Local NO2 Plan
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Broxbourne Borough Council Local NO2 Plan – Outline Business Case Status Review & Next Steps Broxbourne Borough Council Project number: 60563501 26th February 2021 Broxbourne Borough Council Project number: 60566564 Quality information Prepared by Checked by Verified by Approved by Chris Wood Jonathan Morrow Jonathan Morrow Siamak Khorgami Principal Consultant Associate Director Associate Director Regional Director Revision History Revision Revision date Details Authorized Name Position V1.0 2020-06-22 AECOM Draft Yes Siamak Regional Khorgami Director V2.0 2020-07-01 Final V3.0 2020-11-27 Final incorporating analysis of Yes Siamak Regional softer measures Khorgami Director V3.1.1 2021-01-06 Final incorporating TIRP Yes Hannah Smith Senior Air feedback (BV update) Quality Consultant V3.2 2021-02-05 Final incorporating next steps Yes Hannah Smith Senior Air (BV update) Quality Consultant V3.3 2021-02-26 Updated measures valuation Yes Antony Wiatr Technical in Annex B (BV update) Director Prepared for: Broxbourne Borough Council Prepared by: Chris Wood AECOM Limited AECOM House 63-77 Victoria Street St Albans Hertfordshire AL1 3ER UK T: +44(0)1727 535000 aecom.com Supporting inputs from: © 2021 AECOM Infrastructure & Environment UK Limited. All Rights Reserved. Prepared for: Broxbourne Borough Council AECOM Broxbourne Borough Council Project number: 60566564 This document has been prepared by AECOM Infrastructure & Environment UK Limited (“AECOM”) for sole use of our client (the “Client”) in accordance with generally accepted consultancy principles, the budget for fees and the terms of reference agreed between AECOM and the Client. Any information provided by third parties and referred to herein has not been checked or verified by AECOM, unless otherwise expressly stated in the document. No third party may rely upon this document without the prior and express written agreement of AECOM. Prepared for: Broxbourne Borough Council AECOM Broxbourne Borough Council Project number: 60566564 Table of Contents 1. Introduction .............................................................................................. 6 The A10 PCM Exceedance Stretch ........................................................................................................ 6 COVID-19 Caveat ................................................................................................................................... 7 Work Undertaken to Date ........................................................................................................................ 7 Scheme Identification Background ......................................................................................................... 8 Ministerial Direction – May 2020 ............................................................................................................. 8 Purpose of This Document ...................................................................................................................... 9 2. The Existing & Future Situation ............................................................. 10 The A10 Study Area .............................................................................................................................. 10 Current Traffic Conditions ..................................................................................................................... 10 ANPR Data Summary ........................................................................................................................... 11 COMET Transport Modelling and Natural Compliance ......................................................................... 15 Defining the Scale of Change Required ................................................................................................ 15 Section Summary .................................................................................................................................. 17 3. Wider Scheme Constraints/Issues ........................................................ 18 M25 Junction 25 .................................................................................................................................... 18 HCC Major Road Network (MRN) Bid ................................................................................................... 18 London Ultra Low Emission Zone (ULEZ) ............................................................................................ 19 Timescales ............................................................................................................................................ 19 Conflicting Project Guidance ................................................................................................................. 19 Section Summary .................................................................................................................................. 20 4. Previous Scheme Options ..................................................................... 21 Major Schemes Discounted .................................................................................................................. 21 Summary of Modelling Undertaken to Date .......................................................................................... 21 Section Summary .................................................................................................................................. 25 5. New Scheme Parameters (CSFs) ......................................................... 26 New Critical Success Factors ............................................................................................................... 26 Primary Critical Success Factors .......................................................................................................... 26 Secondary Critical Success Factors ..................................................................................................... 26 Tertiary Evaluation of Soft Measures .................................................................................................... 27 Revised OBC Timescale ....................................................................................................................... 27 6. Remaining Scheme Options .................................................................. 28 Caveat ................................................................................................................................................... 28 Discounted Scheme Options ................................................................................................................ 29 Possible Scheme Options (if OBC deadline extended) ........................................................................ 32 Remaining Scheme Options ................................................................................................................. 34 Non-Transport Scheme Options ........................................................................................................... 34 7. Initial Conclusions ................................................................................. 36 Recommendations/Next Steps.............................................................................................................. 36 JAQU Response ................................................................................................................................... 36 8. Softer Measures Analysis ...................................................................... 37 9. Final Conclusions and Next Steps ........................................................ 47 Appendix A – EFT Traffic Signal Control Analysis ........................................... 49 Appendix B – Details of Softer Measures to be Pursued ................................ 60 Prepared for: Broxbourne Borough Council AECOM Broxbourne Borough Council Project number: 60566564 Figures Figure 1.1: A10 Exceedance Location in Broxbourne ............................................................................. 6 Figure 1.2: Department for Environment, Food & Rural Affairs / Department for Transport Business Case Guidance Flow Chart ..................................................................................................................... 8 Figure 2.1: Typical Traffic Conditions on the A10 – AM Peak (Source: Google Maps, copyright Google 2019) ..................................................................................................................................................... 10 Figure 2.2: Typical Traffic Conditions on the A10 – PM Peak (Source: Google Maps, copyright Google 2019)) .................................................................................................................................................... 11 Figure 2.3: Postcodes of cars recorded by the ANPR survey............................................................... 13 Figure 2.4: Postcodes of LGVs recorded by the ANPR survey ............................................................ 13 Figure 2.5: A10 Study Area Index of Multiple Deprivation 2019 (Source: Consumer Data Research Centre Maps) ........................................................................................................................................ 14 Figure 4.1: Scheme Options CAZ Boundaries ...................................................................................... 22 Figure 4.2: 2026 Non-charge option compared with 2026 Baseline (AM peak) ................................... 23 Figure 4.3: