Road Safety Audit Stage 2

A Road Safety Audit Stage 2 is an independent review of a highway scheme at detailed design stage. TTC provides RSA Stage 2 services for developers, consultants, and design teams that require independent advice before a scheme progresses to implementation.

What Is A Stage 2 Road Safety Audit

A Road Safety Audit Stage 2 is carried out on completion of detailed design. At this point, the design has moved beyond the outline or preliminary stage and includes the technical detail needed for a more advanced safety review, encompassing aspects such as junction layouts, road markings, signage, drainage, and the relationship between different road users within the scheme.

The audit is carried out by an independent and suitably qualified team to determine whether the detailed design introduces avoidable safety concerns for drivers, pedestrians, cyclists, and other highway users before the scheme advances further.

Why It Matters

A Stage 2 audit provides a formal check at the phase where design decisions are more defined and technical elements can be assessed in greater detail. This makes it a crucial step for identifying issues before works commence, when changes are usually more manageable than they would be once construction is underway.

For project teams, this helps reduce the risk of safety issues being carried forward into implementation. It also supports a clearer design process by ensuring the scheme has been independently reviewed in line with established road safety audit practices and relevant GG 119 guidance.

What TTC Brings

TTC provides Road Safety Audit Stage 2 services with a focus on clarity, rigour, and practicality. Our audits are undertaken by an experienced team with a proven track record. All our lead RSA auditors hold a National Highways Approved Certificate of Competency, giving clients confidence that audits are led by appropriately qualified professionals.

Our approach is measured and clear, with an emphasis on independent review, qualified auditors, and reports that are straightforward to use.

Our Stage 2 Audit Services Include:

• Independent review of detailed design drawings and supporting information.
• Assessment of technical features such as junction layouts, lining, signing, visibility, drainage, and road user movement.
• Identification of potential safety issues affecting all relevant users of the highway.
• A clear, professionally written audit report that can be reviewed by the wider project team.
• A straightforward process that supports design progression without losing the independence required of the audit.

We undertake RSAs in accordance with relevant GG 119 guidance and position the service as part of a wider transport planning package. This approach is useful on live projects, where road safety cannot always be considered in isolation from design, planning requirements, and the practicalities of delivery.

Who This Service Is For

Our Road Safety Audit Stage 2 service is suitable for developers, consultants, engineers, architects, and public sector teams working on highway schemes. It is used where detailed design needs an independent safety review before the project moves forward with approval, tender, or delivery.

It is commonly commissioned for schemes involving new access points, junction changes, highway alterations, and development infrastructure.

When Is A Stage 2 Road Safety Audit Needed

A Road Safety Audit Stage 2 is usually commissioned when detailed design is complete, but before the scheme progresses to implementation. This audit is usually needed on schemes where the design includes junction changes, revised access arrangements, updated road markings, signage, drainage, junction changes, and other technical features that affect how the highway will operate in practice. 

To begin the audit, the design team will typically provide detailed drawings, supporting background information, and any scheme-specific context to the audit team to help them understand how the proposal has been developed.

In some cases, Stages 1 and 2 RSAs may be combined for smaller schemes, but where a full Stage 2 is required it should reflect the more developed technical detail available at that point. This is the stage where features such as geometry, visibility, and other design components can be reviewed in more informed and specific ways.

Related Services

A Stage 2 Road Safety Audit forms part of the wider RSA process, alongside stages 1, 3, and post-construction reviews where required. We position our full range of RSA services as part of a structured process carried out by an experienced team in accordance with GG 119.

For schemes that require continuity across planning, design, and implementation, TTC also provides wider transport planning support. This interconnected approach can be particularly useful where highway safety, access, and movement all need to be considered together.