The Road Safety Audit

Stages 1 to 4

The Road Safety Audit

Where significant changes to the local highway network are proposed as a consequence of either the proposed access arrangement or off site highway improvements it is usual that the preliminary designs are subject to a Stage 1 Road Safety Audit. This document accompanies the Transport Assessment and provides an independent assessment of the key design and operating arrangements of the highway works.

The Road Safety Audit will identify potential road safety issues or problems that may affect all users of the highway and to recommend measures to eliminate or mitigate these problems.  A Road Safety Audit is not simply a check that a scheme meets design standards.

In March 2015 the standard for undertaking Road Safety Audits on the Strategic Highway Network (Trunk Roads and Motorways) has been updated. Formal guidance on Road Safety Audits is contained within GG119 (formerly HD19/15) of the Design Manual for Roads and Bridges.

Road Safety Audits are undertaken at various stages of the highway improvement scheme and comprise:-

Stage 1 – Completion of preliminary design 

Stage 2 – Completion of detailed design

Stage 3 – Completion of construction

Stage 4 – Monitoring (12 months and 36 months)

A stage 1 and 2 Road Safety Audit are quite often combined.

Road Safety Audits can be requested for:

  • Major and minor highway improvements
  • Traffic management and calming schemes
  • Pedestrian and cycling schemes
  • New and amended junctions
  • Motorway improvements

Road Safety Audits are undertaken by an Audit Team, which must be independent to the Design Team.  The Audit Team comprises of a minimum of two persons with appropriate levels of training, skills and experience in Road Safety Engineering and/or Accident Investigation.  The members of the Audit Team may be drawn from within the Design Organisation or from another body.

Site visits are a specific requirement of the Audit and both day time and night time visits are usually required in the later Audit stages.


What Our Clients Say:

Swept Path Analysis and Visibility Drawing incorporated into a Technical Note, Proposed Residential Dwelling, Colchester.

Planning permission approved finally, I am certain it was your input when you asked for the refusal to be put into writing so it can go to appeal… well done & thank you again. Nicholas Perks, Wyvern Building

Highway Statement, Proposed Residential Development, Stockport

Just want to pass on my thanks and appreciation. Your knowledge and speed at looking at the issues were incurred was superb. Hopefully we’ll have the pleasure of working together in the future. Craig Ashton, Managing Director, CPA Bespoke Joinery Ltd.

Transport Assessment, Proposed Residential Development (170 dwellings), Essex

This report is of the highest quality and detail and draws the conclusions we had hoped to see. Thanks to you and the team for this, we will certainly be using Sanderson Associates on future projects. Tom Helliwell, Managing Director, Class Q Ltd

Speed Survey, Proposed Private Residential Development – Testimonial

Thank you so much for your fast and efficient service, the speed survey was conducted efficiently and the report given has really helped our planning application process with highways moving forward. Communication from yourselves was also fantastic and swift. Would most definitely recommend you to everyone. Much appreciated! Ismail Chopdat (Private Individual)

Access Feasibility Study, Proposed Private Residential Development – Testimonial

I have recently worked on a project with Karen and Ashley at Sanderson’s and they were extremely helpful, professional and worked to my extremely tight deadline. I have no hesitation in recommending this company their attention to detail and professionalism was much appreciated. Rosie Marsh (Private Individual)

Analysis of Speed Survey and Swept Path Analysis

Brett and the Sanderson’s team were invaluable to us in obtaining highways consent which in part cleared the way for our planning application to be approved. They provided a proactive professional and personable approach to satisfy and fulfil the Cambridgeshire highways requirements. We recommend them and will use them again. Daykin Waters Waters Developments

Stage 2 Road Safety Audit, Residential, Staffordshire

Sanderson Associates were the successful bidder for carrying out a Stage 2 Road Safety Audit on behalf of TSP Projects. Their team were committed to the tight programme, and not only did they undertake the audit and agree terms and conditions in a short space of time they were receptive and flexible with planning the […]

Construction Traffic Management Plan

Sanderson Associates have been very helpful for us and our clients. They proved efficiency and competitive pricing. Thank you for your services. Andreea Raicu, Architect, Tang & Associates Ltd

Flood Risk Assessment, Testimonial, Industrial Development, Sheffield

Sanderson’s were a great in helping us with our planning application for a new material silo at our manufacturing base in Sheffield. Darren was efficient and swift in his discussions with the council on the need for a flood risk assessment on the site. Darren’s knowledge of the site and surrounding area and consequent discussions […]

Travel Plan

We have worked with Ashley, found the service very professional, efficient and cost-effective. We received the surveys and reports on time and were kept fully appraised with everything, excellent service all round. Recommend using Sanderson again in the future. Thank you, Al Ihsan Trust

Require the Services of a Highway Engineer?

Sanderson Associates have enjoyed over 35 years in business delivering experienced Highway Engineering Services to our clients, having completed over 12,200 schemes for a wide variety of major and minor developments throughout the whole of the UK, Isle of Man and Ireland.

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Highway Engineer, Road Safety Audit, Stage 1 Road Safety Audit, Preliminary Design
Stage 2 Road Safety Audit, Detailed Design, Stage 3 Road Safety Audit, Construction
Stage 4 Road Safety Audit, Monitoring, Highway Improvements, Traffic Management
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