Stages of a Road Safety Audit

There are four different stages of a Road Safety Audit each forming their own independent report but refer to each other and these are detailed below:-

Stage 1

Stage 1 Road Safety Audits are undertaken at the completion of preliminary design and where possible, before planning consent is granted. This is the last occasion at which land requirements may be increased and it is therefore essential to consider fully any road safety issues which may have a bearing upon land take before planning consent is granted. At the Road Safety Audit Stage 1 all team members shall visit together and examine the existing highway layout or features and where the new highway improvement scheme ties into the existing highway.

Stage 1 – Completion of Preliminary Design

  • Will the new road drain adequately
  • Can all accesses be used safely
  • Are horizontal and vertical alignments consistent with required visibility
  • Is provision for right turning vehicles required
  • Have pedestrian and cycle routes been provided where required
  • Are lighting columns located at new junctions and where adjoining existing roads
  • Are any road markings proposed at this stage appropriate

Please see the Stage One Road Safety Audit Checklist

Stage 2

Stage 2 Road Safety Audits are undertaken at completion of the detailed design stage of the works. The Audit Team will be able to consider the layout of junctions, position of signs, carriageway markings, lighting provision and other issues. At the Road Safety Audit Stage 2 all team members shall visit together and examine the existing highway layout or features and where the new highway improvement scheme ties into the existing highway.

Stage 2 – Completion of Detailed Design

  • General basic design principals
  • Local alignment
  • Visibility
  • Junctions layout and visibility
  • Non motorised user provision
  • Road signs, carriageway markings and lighting

Please see the Stage Two Road Safety Audit Checklist

Stage 3

The Stage 3 Road Safety Audit should be undertaken when the Highway Improvement Scheme is substantially complete and preferably before the works are open to road users. The Audit Team will examine the scheme site during daylight and during the hours of darkness, so hazards particular to night operation can also be identified. The Audit Team Leader shall invite representatives of the Police, the Local Authority and Maintaining Agent to accompany the Audit Team to offer their views for the Stage 3 Audit.

Stage 3 – Completion of Construction

  • The Audit Team should consider whether the design has been properly translated into the scheme as constructed and that no inherent road safety defect has been incorporated into the works.
  • Particular attention should be paid to design changes which have occurred during construction.
  • Design principles
  • Local Alignment
  • Visibility
  • Junction layouts
  • Non motorised user provision
  • Road signs, carriageway markings and lighting

Please see the Stage Three Road Safety Audit Checklist

Stage 4 - (Monitoring)

During the first year a Highway Improvement Scheme is open to traffic, a check should be kept on the number of personal injury collisions that occur, so that any serious problems can be identified and remedial work arranged quickly. Stage 4 collision monitoring reports shall be prepared using 12 months and 36 months collision data from the time the scheme became operational.

These reports shall be submitted to the Overseeing Organisation. The collision records shall be analysed in detail to identify:

  • Locations at which personal injury collisions have occurred
  • Personal injury collisions that appear to arise from similar causes or show common factors.

The analysis should include identification of changes in the incident population in terms of number, types, and other collision variables, and comparisons should be made with control data. Where the Highway Improvement Scheme is an on-line improvement then the collision record before the scheme was built should be compared with the situation after opening. The collision data should be analysed to identify the influence of problems and recommendations identified at previous audit stages, and any Exception Reports.

If collision records are not sufficiently comprehensive for detailed analysis, the police should be contacted to ascertain the availability of statements and report forms, which could aid the 36-month data analysis.

The collision monitoring reports should identify any road safety problems indicated by the data analysis and observations during any site visits undertaken. The reports should make recommendations for remedial action.

Exception Report or Designers Response Report

It is the Design Team’s responsibility to ensure that all problems raised by the Audit Team are given due consideration. If the Design Team considers any problem raised to be insignificant or is outside the terms of reference, or that the solutions recommended are not suitable given the relevant economic and environmental constraints, the Design Team shall prepare a Designers Response Report giving reasons and proposing alternatives.  At each audit stage, the Designers are invited to respond to the audit.

The Design Team shall provide copies of the designers response report to the audit team leader for action and information respectively.

A copy of the report is also given to the Local Highway Authority as they have the ultimate decision on whether to accept the recommendations of the audit team and/or the responses of the design team.

Require Assistance with a Road Safety Audit?

Sanderson Associates have extensive experience in providing Road Safety Audits for a wide variety of major and minor developments throughout the whole of the UK, Isle of Man and Ireland.

One of our Road Safety Auditors holds the Road Safety Audit, Highways England Approved Certificate of Competency, we are therefore able to carry out Road Safety Audits on the Trunk Road Network that comply with the detailed requirements of the Design Manual for Roads and Bridges HD 19/15.

We would be pleased to provide you with our competitive fee proposal to provide you with our Road Safety Audit Services, please call us on 01924 844080 or click here to complete our secure online form.

Stages of a Road Safety Audit, Stage One Road Safety Audit, Stage Two Road Safety Audit Stage Three Road Safety Audit, Stage Four Road Safety AuditException Report, Designers Response Report