Bridgestone develops TRWP vehicle collection method for trucks and buses

Bridgestone has developed what it claims to be the industry’s first Tire and Road Wear Particles (TRWP) vehicle collection method specifically for truck and bus tyres, aiming to deepen the understanding of their potential environmental impact.

TRWP are the result of friction between the tyre and the road surface, which is essential for ensuring a safe and comfortable journey. They consist of a mixture of tread (tyre surface) and road pavement materials.

In developing the TRWP vehicle collection method for trucks and buses, Bridgestone leveraged knowledge gained from the TRWP vehicle collection method for passenger cars, such as the generation process and distribution of TRWP, to create a proprietary, highly efficient collection system.

Bridgestone’s proving ground is designed to simulate various driving conditions and was used for vehicle testing. To prevent contamination of TRWP generated from trucks and buses with other particles already present on the road, the proving ground was thoroughly cleaned prior to testing.

Bridgestone developed suction devices and inlets compatible with large tyres. For the cover, a robust aluminium frame was adopted to be durable against strong wind. Using this collection device, Bridgestone can efficiently collect TRWP generated during driving.

TRWP remaining on the course and inside the tyre cover were collected, after driving.

Bridgestone said it is actively conducting various TRWP research activities on the particle size distribution, transport and fate, and potential environmental impact.

In 2025, the company announced the TRWP vehicle collection method for passenger car tyres and has continued to enhance collection efficiency and research.