Since 1962, the Brett Trief Vehicle Containment Kerb system has been delivering high levels of vehicle and pedestrian protection across the country and is widely recognised as having made a substantial contribution to British road safety.

The Brett Trief Kerb has been specifically designed and proven to work in three ways to prevent vehicles leaving the carriageway:

  1. Firstly, the Trief Kerb is intended to present a clear visual signal to road users that it will prevent vehicles trying to leave the carriageway. Its height also discourages pedestrians from crossing the highway. The result is that the separate streams of road users are effectively segregated - a key contributor to enhanced road safety.
  2. Secondly, the Trief Kerb is installed with a 25mm upstand from the highway surface leading onto an inclined shoulder. This is essential to give road users an initial physical warning that their vehicle is leaving the carriageway and that they need to take action to bring their vehicle back onto the carriageway. The inclined shoulder will help the driver bring the vehicle back onto the carriageway.
  3. Finally, the Trief Kerb is designed to capture the sidewall bulge of a vehicle tyre within its concave section, thereby helping to contain the vehicle within the carriageway boundary. Once contained, the result is that the tyre is turned parallel to the kerb thereby minimising the upward traction available to the tyre and its ability mount the kerb.

Today, the Trief Kerb system continues to set the benchmark for vehicle containment kerbs, with a versatile range of easy-to-install, passive road safety components.

When specifying Trief we also offer a comprehensive design service to help ensure that you get the optimal solution. As part of this service we can also produce bespoke units to complete your project.

Contact us on or call us on 0345 60 80 579 to find out more.