London to Wales Route Strategy Evidence Report Technical Annex April 2014
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Safe roads, reliable journeys, informed travellers London to Wales Route Strategy Evidence Report Technical Annex April 2014 An executive agency of the Department for Transport Technical annex to London to Wales route-based strategy evidence report Document History Technical annex to London to Wales route-based strategy evidence report Highways Agency This document has been issued and amended as follows: Version Date Description Author Approved by 1 12/12/13 First draft issue to Highways Agency Ian Parsons Andrew Page-Dove 2 13/12/13 Second draft Ian Parsons Andrew Page-Dove 3 16/01/14 Final draft for Publication Agency SW RBS Andrew Page-Dove Team 4 30/01/14 Final draft for stakeholders Agency SW RBS Ian Parsons Team 5 03/04/14 Final for publication Agency SW RBS Colin Gimblett Team i Technical annex to London to Wales route-based strategy evidence report Table of Contents Document History .........................................................................................................i Technical annex to London to Wales route-based strategy evidence report.................i Tables ........................................................................................................................iii Figures.......................................................................................................................iv Part A Supporting evidence.................................................................................5 A1 Introduction .....................................................................................................6 A1.1 Route description...........................................................................................6 A2 Route capability, condition and constraints...............................................12 A2.1 Route performance ......................................................................................12 A2.2 Road Safety.................................................................................................19 A2.3 Asset Condition............................................................................................19 A2.4 Route Operation ..........................................................................................19 A2.5 Technology ..................................................................................................19 A2.6 Vulnerable Road Users................................................................................20 A2.7 Environment.................................................................................................21 A3 Future considerations ..................................................................................27 A3.1 Economic development and surrounding environment ................................27 A3.2 Network improvements and operational changes........................................31 A3.3 Wider transport networks.............................................................................35 A4 Key challenges and opportunities...............................................................38 A4.1 Timescales...................................................................................................38 A4.2 Stakeholder priorities ...................................................................................38 A4.3 Operational challenges and opportunities....................................................38 A4.4 Asset condition challenges and opportunities..............................................38 A4.5 Capacity challenges and opportunities ........................................................38 A4.6 Safety challenges and opportunities ............................................................38 A4.7 Social and environmental challenges and opportunities ..............................38 Part B Stakeholder engagement........................................................................39 B1 Stakeholder Engagement Events .................................................................40 B1.1 Engagement Events Diary ............................................................................40 B1.2 Forward Swindon LEP Event – Invitees and Attendees................................40 B1.3 West of England LEP Event – Invitees and Attendees .................................40 ii Technical annex to London to Wales route-based strategy evidence report B1.4 GFirst LEP Event – Invitees and Attendees..................................................41 B1.5 Buckinghamshire Thames Valley LEP Event – Invitees and Attendees .......42 B1.6 Thames Valley Berkshire LEP Event – Invitees and Attendees....................42 B1.7 Forward Swindon LEP Event – Notes...........................................................44 B1.8 West of England LEP Event – Notes ............................................................54 B1.9 GFirst LEP Event – Notes.............................................................................67 B1.10 Buckinghamshire Thames Valley LEP Event – Notes ..................................81 B1.11 Thames Valley Berkshire LEP Event – Notes...............................................90 Tables Table A2.1 Sections of the route falling within the national top 250 (top 10%) busiest in England ..............................................................................................12 Table A2.2 Sections of the route in the national top 250 (top 10%) least reliable journey-time 2012/13 ..........................................................................................12 Table A2.3 Links with freight proportions over 20% ........................................13 Table A2.4 M4 – Derivation of Flow range (vehicles per day, in both directions) 14 Table A2.5 A404 – Derivation of Flow range (vehicles per day, in both directions) 14 Table A2.6 M32 – Derivation of Flow range (vehicles per day, in both directions) 15 Table A2.7 M48 – Derivation of Flow range (vehicles per day, in both directions) 15 Table A2.8 M49 – Derivation of Flow range (vehicles per day, in both directions) 15 Table A2.9 A308(M) – Derivation of Flow range (vehicles per day, in both directions) 15 Table A2.10 M4 – Derivation of Average Freight Proportion ...........................16 Table A2.11 A404 – Derivation of Average Freight Proportion........................17 Table A2.12 M32 – Derivation of Average Freight Proportion .........................17 Table A2.13 M48 – Derivation of Average Freight Proportion .........................18 Table A2.14 M49 – Derivation of Average Freight Proportion .........................18 Table A2.15 A308(M) – Derivation of Average Freight Proportion ..................18 Table A2.16 Collisions / Casualties – Temporal Analysis................................19 Table A2.17 Technology Provision along the Strategic Road Network Section 20 iii Technical annex to London to Wales route-based strategy evidence report Table A2.17 Technology Provision along the Strategic Road Network section20 Figures Figure A1.1 Scheme Publication Extract – Scheme Overview 8 Figure A1.2 Scheme Publication Extract – Scheme Coverage 9 Figure A1.3 Scheme Publication Extract – Scheme Detail 10 Figure A2.1 Bristol AQMA coverage 21 Figure A2.2 Reading AQMA coverage 22 Figure A2.3 Wokingham AQMA coverage 23 Figure A2.4 Royal Borough of Windsor and Maidenhead – Bray/M4 AQMA coverage 24 Figure A2.5 South Bucks District Council AQMA coverage 25 Figure A2.6 Slough Borough Council – Slough AQMA No.1 coverage 26 Figure A2.7 Bristol City Region City Deal – Executive Summary Extract 28 Figure A2.8 Bristol City Region City Deal – Vision and Strategy for Growth Extract 29 Figure A2.9 Bristol City Region City Deal – Diagram Extract 30 iv London to Wales route-based strategy evidence report Part A Supporting evidence 5 London to Wales route-based strategy evidence report A1 Introduction A1.1 Route description M4 Junction 19-20 and M5 Junction 15-17 Smart Motorway Section 1.3 of the main report provides a description of the route and within that description; reference is made to the upgrade of the route to smart motorway between M4 junctions 19 and 20. Further information is provided here in relation to this scheme. The Agency is working to improve the M4 between junctions 19 and 20, and the M5 between junctions 15 and 17, by making it a smart motorway (previously known as managed motorways). Smart motorways help relieve congestion by using technology to vary speed limits. They also allow the hard shoulder to be used as a running lane at peak times to create additional capacity. They deliver these benefits at a significantly lower cost than conventional motorway widening and with less impact on the environment during construction. See pages 8 and 9 for more about smart motorways. Following the October 2010 Spending Review, it was announced in April 2011 that this scheme would be prepared to start construction in early 2012. Works were then officially started on 25 January 2012 by Roads Minister Mike Penning. It was planned to open the scheme to traffic in the fourth quarter (between January and March) of financial year 2013/14. The M4/M5 smart motorway scheme is taking place on the link between the main motorways between London, the West and the Midlands and South-West. It serves the City of Bristol. This work is needed as the route suffers from heavy congestion and unpredictable journey times. The estimated outturn cost of £89 million was approved by the Secretary of State in October 2011 prior to the start of construction. The current forecasted cost for this scheme is £86 million