Area 2 Watchman Report - September 2014 to December 2014
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M4 Junction 17 – Queuing at Exit Slips Aim To review and understand the magnitude of a reported issue of queuing on the exit slip roads and back on to the mainline at M4 junction 17. This issue is occuring in both directions, with the eastbound exit slip being impacted during the weekday (Monday to Friday) morning peak and the westbound exit slip during the weekday evening peak. This issue has been reported to Skanska both by the general public (through HAIL) and by service provider staff and raised as a safety concern due to the impact on mainline traffic, where swerving to avoid the back of the queue has been observed. It has been suggested that the queuing may have been exacerbated by the expansion of Dyson at Malmesbury. Approach Historic Highways Agency MIDAS speed data has been analysed at both the slip itself and in lane 1 of the mainline carriageway on the approach to the slips. The period November 2013 to February 2014 has been reviewed. Results A large amount of data has been analysed and it is apparent that slow speeds occur on the slip roads at the times reported. Slow speeds have occurred on the exit slip roads throughout the review period (November 2013 to February 2014). A distinct impact on the mainline during the peak hours is occurring more frequently in January and February 2014 than it was in November and December 2013, there were some slow speeds observed westbound in November, but these were largely outside peak times, so are likely to be incident related. Weekday average speeds on both exit slip roads regularly drop below 30 mph and on certain days drop below 10 mph, for comparison average speeds on these slips are typically around 50 to 60 mph. The impact on the mainline is much more sporadic, and only occurs on occasional days each month. It is worthy of note that the mainline data sites are around 500 metres from the exit slips which means it is quite possible there is mainline queuing on other days, but not necessarily going back as far as 500 metres. Speeds on the mainline during these days are notably slower than the norm and speeds on occasion drop as low as 10mph. These very slow speeds have only started to occur since January 2014. Figures 1 to 4 below highlight the slow speeds on the exit slip and mainline in each direction in January 2014. The x axis shows the hour of the day (by 15 minute time interval) and the y axis shows the average sped during that period.These graphs clearly highlight the phenomena observed. Further graphs for additional months are included in Appendix 1. Page 1 1 Figure 1: M4 J17 Westbound Exit Slip – Average Speeds – January 2014 Figure 2: M4 J17 Westbound Approach Lane 1 – Average Speeds – January 2014 Page 2 2 Figure 3: M4 J17 Eastbound Exit Slip – Average Speeds – January 2014 Figure 4: M4 J17 Eastbound Approach Lane 1 – Average Speeds – January 2014 Page 3 3 Conclusions It is very evident from the data that speeds on the exit slips are very slow during the peak hours when compared with normal conditions. The data suggests that the situation is definitely not improving when considering the 4-month period reviewed. Press reports in January 2014 suggested that Dyson could double the size of their base and triple their workforce in coming years, potentially as soon as 2015, which could result in up to 3,000 new jobs. These initial findings suggest that a study at this location would be beneficial in order to fully understand the extent of the issue and also consider plans to accommodate future growth. Page 4 4 Apppendix 1 Page 5 5 Page 6 6 Page 7 7 Page 8 8 Area 2 Watchman Report - September 2014 to December 2014 Area 2 Watchman Report September 2014 to December 2014 Version 2.6 February 2015 Document Ref: Watchman R0084 – February 2015 1 9 Area 2 Watchman Report - September 2014 to December 2014 Document history Document ref: Watchman R0084 Version Purpose description Originated Checked Reviewed Authorised Date 1.0 Draft M Anning - - - 23-05-13 2.0 Issue M Anning S Wright G Masters D Gordon 21-06-13 2.1 Issue D Sharp S Wright M Anning D Gordon 31-10-13 2.2 Issue D Sharp S Wright M Anning D Gordon 29-01-14 2.3 Issue D Sharp S Wright M Anning D Gordon 29-04-14 2.4 Issue D Sharp S Wright M Anning N Tomlinson 29-07-14 2.5 Issue D Sharp S Wright M Anning N Tomlinson 28-10-14 2.6 Issue D Sharp G Masters M Anning N Tomlinson 27-02-15 Sign-off Client/Staff Highways Agency Member Project Area 2 Asset Support Contract Notice This report was produced by Skanska Area 2 team for the Highways Agency and fulfils the specific purpose of producing the quarterly Watchman Report. This report may not be used by any person other than the Highways Agency without express permission. In any event, Skanska accepts no liability for any costs, liabilities or losses arising as a result of the use of or reliance upon the contents of this report by any person other than the Highways Agency. Document Ref: Watchman R0084 – February 2015 2 10 Area 2 Watchman Report - September 2014 to December 2014 Table of Contents Section Page 1.0 Introduction 4 2.0 Network Safety 5 - 7 3.0 Network Availability 8 - 15 4.0 Asset and Network Need 15 - 18 5.0 Customer Satisfaction 18 - 21 6.0 Maintenance Requirements 22 7.0 Schemes 22 – 23 8.0 Audit Performance 23 Appendix 1 24 - 28 Document Ref: Watchman R0084 – February 2015 3 11 Area 2 Watchman Report - September 2014 to December 2014 1.0 Introduction This Watchman report covers the period from 1st September 2014 to 31st December 2014. Our primary focus remains on the management of the two fundamental risks identified in the Contract, Network Safety and Network Availability. However, to align with the Highways Agency’s changing priorities, we have also identified other areas of opportunity, particularly for improved customer satisfaction. Operational outputs and network intelligence have been used to inform Network needs and consequently, maintenance requirements and scheme identification. The report summarises Skanska’s analysis of available data and other information relating to the Area 2 Network over the period. It also identifies how we have used this intelligence to assess performance and make decisions regarding Maintenance and Operational Requirements and the identification of schemes. Sources of data, information and other intelligence include: • Accident investigations and data analysis • Incident management data • Traffic data • Defect intervention data • Asset condition data (from HA and Skanska systems) • Customer enquiries • Watchman observation forms • The JOM • The Highways Agency (ADT, SDT, Communications Team, RIU, etc) • Local Authorities • Other stakeholders (Parish Councils, developers, statutory undertakers, event organisers, etc) In accordance with AMOR Part 1, we have made recommendations where appropriate. Document Ref: Watchman R0084 – February 2015 4 12 Area 2 Watchman Report - September 2014 to December 2014 2.0 Network Safety 2.1 Fatal Crashes There has been 5 fatalities resulting from 4 incidents on the Area 2 Network between 1st September 2014 and 31st December 2014. This is summarised in the Table 1 below. No. of Closure Date Time Route Location Details of Fatal accidents Fatalities Duration 07/09/2014 13:22 A36 Between Wilton 2 Car and motorcycle. Motorcyclist 6.5 and Deptford died at scene and car driver died on 08/10/2014. 18/10/2014 03:01 M5 J28-J27 1 Fall/jump from bridge and hit by 8.5 traffic. 22/10/2014 19:18 A36 Wilton Road 1 Pedestrian was struck by V1. 3 Salisbury near Pedestrian died on 13/11/2014. Quaker meeting rooms 05/11/2014 02:27 M5 J26-J25 1 HGV lost control and left 6.5 MP213/4B carriageway, driver got out and was struck by another HGV. Table 1: Fatal Incident Details – September 2014 to December 2014 – Area 2 All fatal crashes have been investigated by Skanska, but no new cluster sites, trends or areas of continuous improvement have been identified following fatal collisions. There were 2 fatalities in September, 2 in October, 1 in November and 0 in December. There were 12 in the same period in 2013. Figure 1: Number of Fatalities by Month – September 2013 to December 2014 – Area 2 Document Ref: Watchman R0084 – February 2015 5 13 Area 2 Watchman Report - September 2014 to December 2014 2.2 Serious Injuries Serious Casualties are not reported immediately after occurring, but are monitored within the Area 2 Annual Safety Statement, using accident details as recorded in STATS19. Because this dataset is received from other recording authorities (police and local authorities) and needs approval from DfT, this dataset is usually considerably out of date. Given that the Police now investigate all contributory factors, we are also finding it increasingly difficult to obtain details prior to publication of the statistics. These issues currently prevent closer alignment with real- time analysis. As illustrated in Tables 2.1 and Table 2.2, the total number of accidents shows an annual reduction. The number of fatal has increased slightly in 2012/13 in comparison to 2011. The number of serious has remained similar and the number of slight has decreased since 2011. Table2:1 Collisions by Year and Severity; Area 2 Entire Network. Year Fatal Serious Slight Total PIC Severity Ratio PIC Rate Baseline (05-09) 27 103 649 779 0.17 16.76 1999 34 75 636 745 0.15 9.69 2000 30 119 748 897 0.17 9.45 2001 32 105 750 887 0.15 9.67 2002 25 100 738 863 0.14 9.85 2003 29 110 762 901 0.15 9.52 2004 37 92 815 944 0.14 9.53 2005 22 83 789 894 0.12 9.47 2006 24 81 698 803 0.13 9.06 2007 34 84 725 843 0.14 8.70 2008 15 83 579 677 0.14 7.80 2009 17 66 580 663 0.13 7.46 2010 22 84 495 601 0.18 6.64 2011 13 69 492 574 0.14 10.29 2012 17 64 401 482 0.17 9.27 2013 19 69 406 494 0.18 8.95 Table 2.2: Casualties by Year and Severity; Area 2 Entire Network.