A428 Black Cat to Caxton Gibbet improvements TR010044 Volume 7 7.10 Combined Modelling and Appraisal Report Appendix A: Traffic Data Collection Report Planning Act 2008 Regulation 5(2)(q) Infrastructure Planning (Applications: Prescribed Forms and Procedure) Regulations 2009 26 February 2021 Planning Inspectorate Scheme Ref: TR010044 Application Document Ref: TR010044/APP/7.10 A428 Black Cat to Caxton Gibbet improvements Appendix A: Traffic Data Collection Report Infrastructure Planning Planning Act 2008 The Infrastructure Planning (Applications: Prescribed Forms and Procedure) Regulations 2009 A428 Black Cat to Caxton Gibbet improvements Development Consent Order 202[ ] Appendix A: Traffic Data Collection Report Regulation Reference: Regulation 5(2)(q) Planning Inspectorate Scheme TR010044 Reference Application Document Reference TR010044/APP/7.10) Author A428 Black Cat to Caxton Gibbet improvements Project Team, Highways England Version Date Status of Version Rev 1 26 February 2021 DCO Application Planning Inspectorate Scheme Ref: TR010044 Application Document Ref: TR010044/APP/7.10 A428 Black Cat to Caxton Gibbet improvements Appendix A: Traffic Data Collection Report Contents 1 Introduction........................................................................................................................ 1 1.1 Purpose of Report ................................................................................................................ 1 1.2 Scheme Description ............................................................................................................. 2 1.3 Report Section Revisions ..................................................................................................... 3 2 Transport Modelling Requirements .................................................................................. 4 2.1 Introduction .......................................................................................................................... 4 2.2 Extent of Model and Detailed Model Area ............................................................................ 5 2.3 Model Time Periods ............................................................................................................. 5 2.4 Vehicle Classifications ......................................................................................................... 5 2.5 Report Section Revisions ..................................................................................................... 7 3 Existing Data Sources ....................................................................................................... 8 3.2 Black Cat to Caxton Gibbet Stage 2 Model........................................................................... 8 3.3 WebTRIS ........................................................................................................................... 12 3.4 Journey Time Data ............................................................................................................ 16 3.5 Roadside Interview Data .................................................................................................... 23 3.6 Report Section Revisions ................................................................................................... 24 4 Specification and execution of surveys.......................................................................... 25 4.1 Project Requirements ........................................................................................................ 25 4.2 Selection of Locations for Surveys ..................................................................................... 25 4.3 Traffic Survey Companies .................................................................................................. 26 4.4 Surveys Required .............................................................................................................. 26 4.5 Dates of Surveys ............................................................................................................... 26 4.6 Incidents ............................................................................................................................ 28 4.7 A14 Construction Impacts .................................................................................................. 29 4.8 Clarifications and Corrections ............................................................................................ 29 4.9 Report Section Revisions ................................................................................................... 29 5 Observed Automatic Traffic Counts ............................................................................... 30 5.1 Introduction ........................................................................................................................ 30 5.2 Observed Link Count Surveys ............................................................................................ 33 5.3 Seasonal Variation ............................................................................................................. 34 5.4 ATC Data Checks and Cleaning ......................................................................................... 35 5.5 ATC Variation .................................................................................................................... 36 5.6 Manual Classified Counts .................................................................................................. 37 5.7 Report Section Revisions ................................................................................................... 37 6 Observed Manual Classified Surveys ............................................................................. 39 6.1 Manual Classified Link Counts ........................................................................................... 39 6.2 Manual Classified Turning Counts ...................................................................................... 42 6.3 Data Checks ...................................................................................................................... 43 6.4 Report Section Revisions ................................................................................................... 45 7 Automatic Number Plate Recognition ............................................................................ 46 7.1 Introduction ........................................................................................................................ 46 7.2 Factored Data .................................................................................................................... 49 7.3 Report Section Revisions ................................................................................................... 53 Planning Inspectorate Scheme Ref: TR010044 Application Document Ref: TR010044/APP/7.10 A428 Black Cat to Caxton Gibbet improvements Appendix A: Traffic Data Collection Report 8 Other Survey Data ........................................................................................................... 54 8.2 Report Section Revisions ................................................................................................... 56 9 Summary and Conclusions ............................................................................................. 57 9.1 Summary ........................................................................................................................... 57 9.2 Conclusions ....................................................................................................................... 58 9.3 Report Section Revisions ................................................................................................... 58 10 Glossary ........................................................................................................................... 59 APPENDIX A ................................................................................................................................... 62 Survey Site Locations by Proposed Model Screenlines & Cordons .................................................... 62 APPENDIX B ................................................................................................................................... 63 Summary of Model Input Flows – AM, IP and PM Periods ................................................................. 63 APPENDIX C ................................................................................................................................... 64 Journey Time Routes Derived from Trafficmaster Data ..................................................................... 64 APPENDIX D ................................................................................................................................... 65 Summary of Incidents ....................................................................................................................... 65 APPENDIX E.................................................................................................................................... 66 July / September 2018 Site Comparison ........................................................................................... 66 APPENDIX F .................................................................................................................................... 67 Re-issued Sites Comparison............................................................................................................