Remvuil

Remvuil is the Dutch term for brake wear debris generated by braking systems in road traffic. It refers to the small particles shed from brake pads and rotors when brakes are applied, and can also include fragments from calipers and wear of the associated friction materials. These particles are released throughout a vehicle's life and accumulate in the environment, particularly near roads with high traffic.

The composition of remvuil varies but commonly includes metals such as iron and copper, as well as graphite and other materials used in brake pads and discs. Particle sizes range from coarse to ultrafine, with a significant fraction in the PM10 and PM2.5 ranges. Older brake pads sometimes contained asbestos; modern formulations are asbestos-free, with shifts toward copper-restricted or ceramic-based materials to reduce wear particles.

Remvuil is categorized as a non-exhaust emission—one of the main sources of urban air pollution alongside tire wear and road dust. It can contribute to ambient PM concentrations and can deposit on soil and surface water. Health concerns focus on inhalation of fine particles and related respiratory effects, particularly for urban populations and traffic workers.

Mitigation strategies include using low-metal or ceramic brake materials, increasing the use of regenerative braking in electric and hybrid vehicles to reduce mechanical braking, improving vehicle maintenance, and road cleaning programs. Policy approaches often treat remvuil as part of broader non-exhaust emission regulations aiming to reduce exposure in populated areas.

Related topics include non-exhaust emissions, brake wear, and air pollution.