Site Report Essex Highways Casualty ReductionDate Site April Report 201 8/19 Date April 2007 Locat ion: CHIGWELL LANE A1168 M11 MOTORWAY M11 District: EPPING Collision Investigation Period: 01/01/2014 – 30/06/2017 Site Ranking: 8 1.0 Site Plan with Collision Plot Chigwell Lane M11 Off-slip M11 Page 1 of 9 2.0 Site Description & Observations Details Description/Observations Road Name (s) Chigwell Lane A1168 jw M11 Northbound Off-slip Grid Reference 544308 - 195621 Speed Limit 40 Street Lit Yes Carriageway type Dual Gradient None Traffic Management / Advanced directional sign and ‘End of Motorway‘ signs on off-slip, Give Existing Traffic Way signs and carriageway markings at junction. Calming Utilities Present Unknown Existing TRO’s 40mph speed restriction. No U-turn Road Surface SCRIM Data (WIP): Good Condition Signing 40 roundel signs, No Entry signing at end of Off-slip Road Markings Clear and appropriate Visibility Good forward visibility to junction with off-slip Vegetation Vegetation within Off-slip embankment Highway Is the scheme within Yes Boundary / Land Highway boundary or (*if the land is not highway the No scheme should only proceed to & Ownership on land owned by feasibility design & land Check ? ECC(*) acquisition/dedication stage) Does the scheme require change to an existing No TRO or Speed Limit Other 3.0 Pers onal Injury Collision Analysis Cluster Site Collision COLLISIONS CASUALTIES Information FATAL SERIOUS SLIGHT FATAL SERIOUS SLIGHT 1 2 3 1 2 5 Identified Collision COLLISIONS CASUALTIES Pattern(s) at Cluster Site FATAL SERIOUS SLIGHT FATAL SERIOUS SLIGHT Vehicles exiting the Off-slip 0 2 2 0 2 4 failing to give way at the junctions and colliding with northbound road users on Chigwell Lane. Page 2 of 9 4.0 Site Photographs Image 1 – Chigwell Ln northbound approach Image 2 – M11 Off slip approach Image 3 – View from Off-slip junction 1 Image 4 – View from Off-slip junction 2 5.0 Recommendation s Remedial Measures A study of the PIC’s at this junction shows a pattern of vehicles failing to Give Way at the junction of the M11 Off-slip and Chigwell Lane (A1168). To encourage lower approach speeds on the Off-slip, it is proposed to increase the length of and widen the centre hatching separating the two lanes of the slip road. This will reduce the width of the running lanes and encourage caution on the approach. To reduce the masking of vehicles waiting at the junction for northbound traffic on Chigwell Lane, it is proposed to reduce the northbound section of Chigwell Lane to a single carriageway. The appropriate advanced signing will be deployed on the northbound approach to the junction to the south of the M11 over-bridge. Page 3 of 9 6.0 Estimate d Costs Total scheme Design and Construction £21500.00 7.0 Predicted Collision Cost Saving from remedial measure Remedial Measures Reduction in Collisions (RoSPA) Markings and Signs 41% 8.0 Other engineering options for consideration NA 9.0 Scheme Approval Safety Engineering Team: Tel No. Date Safety Engineer: 01/12/2017 Senior Safety Engineer: 01/12/2017 Page 4 of 9 Appendix A: FYRR First Year Rate of Return (FYRR) Calculation % FYRR = Annual Collision Savings x 100 Scheme Cost Assumptions: Fatal Serious Slight Average annual collision cost (£) £2,066,732 £235,791 £24,887 Collisions treated 0 2 2 Casualties treated 0 2 4 Investigation time period (years) 3.5 Estimated cost of recommended remedial measures (including Design, Audit and Traffic Management) As per recommendations in Section 6 £21,500.00 Collision saving produced by proposed treatment (%) 41 %FYRR fatal 0 %FYRR serious 257 %FYRR slight 27 Total % FYRR 284 Number of collisions that would not have occurred had the remedial actions been implemented at the start of the collision period 1.64 or 0.47 each year Number of casualties that would not have occurred had the remedial actions been implemented at the start of the collision period 2.46 or 0.70 each year Collision problem Remedial Treatment Average Reduction in Cost £ collisions % Failure to give way at Reduce northbound 21500.00 41 junction. section of Chigwell Lane to single carriageway. Page 5 of 9 Appendix B: VALIDATION Validation Network Assurance (Comment required for EVERY Date proposal) [email protected] sent: Is the proposal against policy: Yes No N/A If ‘YES’ state which Policy: Is the scheme against guidance Yes No N/A If ‘YES’ state which guidance: Agreement to Scheme Proposal: Yes No Comments: Comments provided by: Date: 08/12/2017 Asset Management comment required for EVERY Date proposal sent: [email protected] Does the proposed CR scheme conflict with any other Yes No planned and/or resurfacing work? If ‘YES’ state which scheme: Comments provided by: Date: Design Team Leader (Comment required for EVERY Date proposal) sent: Page 6 of 9 Agreement to Scheme Proposal: Yes No Comments: Comments provided by: Date: HLO (Comment required for EVERY proposal) Date sent: Agreement to Scheme Proposal: Yes No Comments: Comments provided by: Date: MAJOR PROJECTS comment required for EVERY Date proposal sent: Does the proposed CR scheme conflict with any other planned work? Then an ‘if YES state which works’ Yes No If ‘YES’ state which scheme: Comments provided by: Date: DEVELOPMENT MGMT comment required for EVERY Date proposal sent: (SM03) Does the proposed CR scheme conflict with any other planned work? Then an ‘if YES state which works’ Yes No If ‘YES’ state which scheme: Comments provided by: Susan Anker Date: Street Lighting (Consult if required) [email protected] Date sent: Yes N/A Page 7 of 9 If Yes - Agreement to Scheme Proposal: Yes No Comments: Included in Street Lighting Annual programme Yes No Comments provided by: Date: Passenger Transport (Consult if required) [email protected] Date sent: Yes N/A Agreement to Scheme Proposal: Yes No Comments: Included in Passenger Transport Annual programme Yes No Comments provided by: Date: Public Rights of Way (Consult if required) [email protected] Date sent: Yes N/A Agreement to Scheme Proposal: Yes No Comments: Included in Public Rights of Way Annual programme Yes No Comments provided by: Date: ESSEX HIGHWAYS RECOMMENDS THE FOLLOWING SOLUTION: Page 8 of 9 Page 9 of 9 Site Report Essex Highways Casualty ReductionDate Site April Report 201 8/19 Date April 2007 Locat ion: A113 ABRIDGE ROAD JNCT WITH ENTRANCE TO VIRGIN ACTIVE District: EPPING Collision Investigation Period: 01/01/2014 – 30/06/2017 Site Ranking: 13 1.0 Site Plan with Collision Plot A113 M11 Chigwell Lane Page 1 of 8 2.0 Site Description & Observations Details Description/Observations Road Name (s) A113 ABRIDGE ROAD JNCT WITH ENTRANCE TO VIRGIN ACTIVE Grid Reference 545126 - 195491 Speed Limit Derestricted Street Lit Yes Carriageway type Single Gradient None Traffic Management / Centre line and edge of carriageway markings at the access. Traffic island Existing Traffic and centre hatching to the southwest. Calming Utilities Present Unknown Existing TRO’s None SCRIM Data (WIP): Deficiencies Road Surface Signing none Road Markings Visible and appropriate Visibility Forward visibility of the access is limited by vegetation in north verge. Vegetation Vegetation within in north verge obscuring inter-visibility Highway Is the scheme within Yes Boundary / Land Highway boundary or (*if the land is not highway the No scheme should only proceed to & Ownership on land owned by feasibility design & land Check ? ECC(*) acquisition/dedication stage) Does the scheme require change to an existing No TRO or Speed Limit Page 2 of 8 3.0 Pers onal Injury Collision Analysis Cluster Site Collision COLLISIONS CASUALTIES Information FATAL SERIOUS SLIGHT FATAL SERIOUS SLIGHT 1 1 2 1 2 5 Identified Collision COLLISIONS CASUALTIES Pattern(s) at Cluster Site FATAL SERIOUS SLIGHT FATAL SERIOUS SLIGHT Pattern of vehicles exiting the 1 1 2 1 2 5 Health Club access into the path of approaching traffic on the A113 Abridge Road 4.0 Site Photographs Image 1 – Abridge Road northeast bound Image 2 – View to right from access approach to access Image 3 – Abridge Road southwest bound approach to access Page 3 of 8 5.0 Recommendation s Remedial Measures A study of the PIC’s at this location shows a pattern of vehicles exiting the access and colliding with northeast bound traffic on Abridge Road (A113). To provide improved inter-visibility between approaching vehicles and vehicles exiting the access by cutting back the overhanging vegetation. It is also proposed to improve the conspicuity of the access by providing centre hatching and leave a gap at the junction with the access. An alternative solution is to widen the carriageway sufficiently to allow the give way to be brought forward and provide improved inter- visibility. 6.0 Estimate d Costs Total scheme Design and Construction £7000 7.0 Predicted Collision Cost Saving from remedial measure Remedial Measures Reduction in Collisions (RoSPA) Markings and Signs 34% 8.0 Other engineering options for consideration NA 9.0 Scheme Approval Safety Engineering Team: Tel No. Date Safety Engineer: 01/12/2017 Senior Safety Engineer: 01/12/2017 Page 4 of 8 Appendix A: FYRR NA – design only Collision problem Remedial Treatment Average Reduction in Cost £ collisions % Vehicles turning out of access. Vegetation clearance and 7000 41 centre hatching or (design carraigeway widening. only) Page 5 of 8 Appendix B: VALIDATION Validation Network Assurance (Comment required for EVERY Date proposal) [email protected] sent: Is the proposal against policy: Yes No N/A If ‘YES’ state which Policy: Is the scheme against guidance Yes No N/A If ‘YES’ state which guidance: Agreement to Scheme Proposal: Yes No Comments: As well as the recommendations given, please can we make sure that the huge illegal signs that are on the public highway are also removed.