A5 Western Transport Corridor Data Analysis Report Ref: 718736-2700-R-002 1 April 2011 Produced for Prepared by Mouchel Project Office: Mouchel Shorefield House 30 Kinnegar Drive Holywood County Down Northern Ireland BT18 9JQ T 028 9042 4117 F 028 9042 7039 Document Control Sheet Project Title A5 Western Transport Corridor Report Title Data Analysis Report Revision 1 Status Final Control Date April 2011 Record of Issue Issue Status Author Date Check Date Authorised Date 1 Final R Adamfi 15/4/11 S Bennett 15/4/11 D Hardcstle 15/4/11 Distribution Organisation Contact Copies Mouchel Peter Edwards Electronic Roads Service Conor Loughrey Electronic 718736-2700-R-002 i Mouchel 2011 Contents Document Control Sheet .............................................................................................i Contents ......................................................................................................................ii List of Figures ............................................................................................................iv List of Tables..............................................................................................................vi 1 Introduction ........................................................................................................1 2 Traffic Flow Data ................................................................................................2 2.1 The Traffic Flow Dataset ......................................................................................2 2.2 Traffic Flows in Section 1 .....................................................................................2 2.3 Traffic Flows in Section 2 .....................................................................................7 2.4 Traffic Flows in Section 3 ...................................................................................16 2.5 Annual Flow Variation ........................................................................................21 2.6 Determination of Model Time Periods ................................................................21 2.7 Choice of Modelled Days ...................................................................................23 2.8 AADT Flows .......................................................................................................24 2.9 Peak Hour Flows................................................................................................26 3 Accident Data ...................................................................................................28 3.1 Introduction ........................................................................................................28 3.2 Accident Data Analysis for Section 1..................................................................30 3.3 Accident Data Analysis for Section 2..................................................................36 718736-2700-R-002 ii Mouchel 2011 3.4 Accident Data Analysis for Section 3..................................................................42 4 Journey Times..................................................................................................49 4.1 Use of ANPR Data .............................................................................................49 4.2 The ANPR Dataset.............................................................................................49 4.3 Journey Time Routes - Length, Sample Size and Average Run Times ..............51 4.4 Variability of Journey Times ...............................................................................55 4.5 ANPR Cordon Trip Matrices...............................................................................56 5 Roadside Interview Data..................................................................................57 5.1 Use of Roadside Interview Data .........................................................................57 5.2 Roadside Interview Sites Locations....................................................................57 5.3 Data Checks and Data Cleaning ........................................................................58 5.4 Sample Rates ....................................................................................................59 5.5 Vehicle Types and Trip Purposes.......................................................................61 5.6 Patching.............................................................................................................61 5.7 Expansion of RSI Data to Traffic Counts ............................................................62 5.8 Sectored Analysis from Roadside Interview Surveys..........................................63 6 Summary...........................................................................................................83 Appendix A – Summary of ATCs and MCCs ...........................................................85 Appendix B – ANPR Cleaning Summary ...............................................................107 Appendix C – RSI Site locations ............................................................................109 718736-2700-R-002 iii Mouchel 2011 List of Figures Figure 2-1: Traffic flows in vicinity of Section 1 of the scheme during May 2008 (daily Monday to Thursday average excluding bank holidays) .....................................3 Figure 2-2: Seasonal variation of traffic flows on the A5 to the south of New Buildings during 2008........................................................................................................4 Figure 2-3: Daily flow profile on the A5 to the south of New Buildings during May 2008 (Monday to Thursday average excluding bank holidays) ...........................5 Figure 2-4: Vehicle proportions on the A5 to the south of New Buildings on Wednesday 30 April 2008 ..................................................................................6 Figure 2-5: 12 hour vehicle flows at junction of the A5 with the A38 in Strabane on Wednesday 30 April 2008 ..................................................................................7 Figure 2-6: Traffic flows in vicinity of Section 2 of the scheme during May 2008 (daily Monday to Thursday average excluding bank holidays) .....................................8 Figure 2-7: Seasonal variation of traffic flows along the A5 to the north of Omagh during 2008........................................................................................................9 Figure 2-8: Daily flow profile on the A5 to the north of Omagh during May 2008 (Monday to Thursday average excluding bank holidays) ..................................10 Figure 2-9: Vehicle proportions on the A5 to the north of Omagh on Tuesday 29 April 2008.................................................................................................................11 Figure 2-10: Daily flow profile on the A5 through Omagh during May 2008 (Monday to Thursday average excluding bank holidays).................................................12 Figure 2-11: 12 hour vehicle flows at junction of the A5 with the B48 and B50 to the north of Omagh on Tuesday 29 April 2008.......................................................13 Figure 2-12: 12 hour vehicle flows at junction of the A5 with the A32 in Omagh on Tuesday 29 April 2008 .....................................................................................14 Figure 2-13: 12 hour vehicle flows at junction of the A5 with the A505 to south of Omagh on Tuesday 29th April 2008.................................................................15 Figure 2-14: Traffic flows in vicinity of Section 3 of the scheme during May 2008 (daily Monday to Thursday average excluding bank holidays)..........................16 Figure 2-15: Seasonal variation of traffic flows on the A5 to the south of the A4 at Ballygawley during 2008 ..................................................................................17 Figure 2-16: Daily flow profile on the A5 to the south of the A4 at Ballygawley during April 2008 (Monday to Thursday average excluding bank holidays) .................18 Figure 2-17: Vehicle proportions on the A5 to the south of the A4 at Ballygawley on Tuesday 29th April 2008 ..................................................................................19 718736-2700-R-002 iv Mouchel 2011 Figure 2-18: 12 hour Vehicle Flows at junction of the A5 with the A4 to south of Ballygawley on Tuesday 29 April 2008.............................................................20 Figure 2-19: Roads Service Long term ATC site 390 A5 New Buildings: 7 day 24 hour AADT vehicle flows 1993 to 2008.............................................................21 Figure 2-20: Daily flow profile of A5 Long Term ATC sites: total motor vehicle flow by hour (Monday to Thursday average in May 2008, excluding bank holidays).....22 Figure 2-21: Roads Service Long term ATC site 390 A5 New Buildings (between Londonderry and Strabane): 2-way 24 hour flow in vehicles ............................23 Figure 2-22: Roads Service Long term ATC site 626 A5 Conneywarren (between Omagh and Newtownstewart): 2-way 24 hour flow in vehicles .........................23 Figure 2-23: Roads Service Long term ATC site 608 south of Ballygawley (near A4/A5 junction): 2-way 24 hour flow in vehicles................................................24 Figure 4-1: ANPR Survey Sites ...............................................................................50 Figure 4-2: Validation Journey Time Routes............................................................51