The Four Stages of a Road Safety Audit

Stage 1

Preliminary Design

Stage 1: Road Safety Audits are carried out following completion of the initial design phase. The assessment focuses on safety factors that could affect property acquisition, legal licences or easements. It must be completed before draft orders are officially published or planning permission is requested.

For minor schemes where the initial design phase is omitted, the Stage 1 assessment can be combined with the Stage 2 audit during the detailed design phase. This is known as a Combined Stage 1 and 2 Road Safety Audit.

Stage 2

Detailed Design

Stage 2: Road Safety Audits are carried out once the final design has been completed. At this stage, the audit team considers the specific technical elements of the highway project, including the layout, signage, road markings and street lighting.

The review also considers drainage systems, footways, road surfacing, kerbs, structural details and landscaping.

Stage 3

Post Construction

Stage 3: Road Safety Audits take place after construction is complete, ideally before the road is opened to the public. Your existing copy also states that new or improved highway schemes should undergo this assessment within 30 days of opening.

The audit team assesses the completed infrastructure from the perspective of all potential road users, often inspecting the site by driving, walking or cycling. The audit is carried out during both daytime and nighttime hours to identify potential hazards that may only become apparent in darkness.

Stage 4

Post-Opening Monitoring

Stage 4: Road Safety Audits are undertaken after a completed highway scheme opens to monitor its safety performance in accordance with GG119. The audit includes reviewing and analysing personal injury collision data, alongside site inspections, to identify any emerging road safety issues.

Under GG119, Stage 4 monitoring is typically carried out 12 months and 36 months after the scheme opens to traffic. This allows sufficient collision data to be collected and assessed. The findings help determine whether additional safety measures or remedial works are needed to further improve safety for all road users.

Do you require a

Road Safety Audit

Impartial Assessments

Impartial Assessments

Our audits are carried out independently, providing objective recommendations focused solely on improving road safety.

Proven Expertise

Proven Expertise

With decades of industry experience, our team has delivered Road Safety Audits for a wide range of developments and highway nationwide.

Fully Compliant

Fully Compliant with GG 119 DMRB

Conducted in line with the latest industry standards and guidance, helping support planning approval and project delivery.

What is a Road Safety Audit?

A Road Safety Audit is an independent assessment of a proposed highway improvement or new road scheme, carried out to identify potential safety issues before the scheme is brought into use. Read More

Our Approach

Road Safety Audit methodology is built on specialist road safety engineering expertise and decades of practical experience delivering audits across a wide range of highway and development schemes. Read More



Speak to us

If your scheme requires a Road Safety Audit on the trunk road or motorway network, or as part of another highway scheme, our team can help. Please email veronica@dagaltd.co.uk, or click below to request a Road Safety Audit.

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