HomeOur ServicesRoad Restraint Risk Assessment Process (RRRAP)

What is a RRRAP?
Road Restraint Risk Assessment Process also known as RRRAP is a systematic process used to identify, assess, and mitigate risks associated with road construction and maintenance activities. RRRAP is commonly used in the field of highway engineering and construction to ensure the safety of workers, road users, and nearby communities during roadworks and construction activity.

The RRRAP typically involves several steps. First, a thorough assessment is conducted to identify potential hazards and risks related to the specific roadwork activity. This assessment includes factors such as traffic volume, speed limits, road geometry, visibility, nearby infrastructure, and the presence of pedestrians or cyclists.

Once the risks are identified, the next step is to evaluate the likelihood of each risk. This evaluation helps prioritise the risks based on their potential impact and the likelihood of occurrence. The RRRAP then focuses on implementing appropriate mitigation measures to reduce or eliminate the identified risks.

RRRAP is a key part of the design process; this helps determine the requirement and benefits of using Vehicle Restraint Systems, one of the most likely mitigation measures. At Consilium we can provide RRRAP assessments and reports for both roadworks situations where temporary VRS is required and where VRS may be required to protect permanent roadside infrastructure.

This could include commercial development sites with new access requirements and roadside technology installations such as telecommunications and weather monitoring infrastructure. Where the works are not on the National Highways network or local authority roads with lower speed limits, we will provide a risk assessment and report to ensure the correct VRS solution is selected.

Where does RRRAP cover?

The RRRAP covers and enables an assessment to be made, based on risk, as to whether a VRS is warranted to prevent the occupants of an errant vehicle from hitting near side or offside hazards in the following situations.


  • Motorway and dual carriageways – near side verge
  • Motorway slip roads and link roads – near side and offside verges


  • All purpose roads (D2AP, D3AP, Single) – near side verge
  • Other classified roads (D2, D3, Single) – near side verge
  • For single carriageways the RRRAP calculates need for and the length of VRS beyond the hazard as well as that in advance.

Temporary VRS requirements are covered in a different way to permanent hazards. The RRRAP contains a table in which designers are required to complete a series of standard questions relating to the temporary circumstances. This allows the design thought process to be formally documented and recorded in a consistent manner.

Whilst RRRAP calculations are based on permanent situations. They can also be used in temporary scenarios, however under these circumstances, the RRRAP calculations can only be used as a guide.

Gantries and railway parapets

The RRRAP will give an indication only of the requirements for VRS provision at gantries and at Railway parapets.

Certifications and accreditations

We have an extensive list of certifications and accreditations to reassure our clients that the work we delivery is of the highest quality and that we have been independently audited.

Our certifications and accreditations include:

  • NHSS
  • Achilles UVDB Silver Plus
  • Constructionline Approved
  • TMCA Associate Member
  • ISO 9001 Quality Management
  • ISO 14001 Environmental Management
  • ISO 45001 Health & Safety Management

Get in touch

To discuss your requirements simply call us on 0121 328 7266, email info@consilium-ts.co.uk or complete our contact form.

Our Accreditations

Achilles UVDB Silver Plus
Constructiononline Approved
National Highways Sector Scheme
TMCA Associate Member
ISO 9001, ISO 14001 and ISO 45001 Certified