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Clean Vehicle Retrofit Accreditation Scheme (CVRAS)

Scheme type
Certification and Accreditation
Air Quality
Greenhouse Gas Emissions

The CVRAS is a robust certification scheme for manufacturers of retrofit emissions reduction technology that will enable Clean Air Zone (CAZ) compliance of legacy fleet vehicles. This certification scheme supports the operation of Clean Air Zones and addresses the air pollution emissions from buses, coaches, heavy goods vehicles, mini-buses, taxis and vans.

Manufacturers of abatement equipment need to get their equipment accredited before being added to the list of approved devices available to vehicle and Clean Air Zone (CAZ) scheme operators. This ensures that approved filters meet minimum technical standards and that vehicles fitting these approved emission reduction systems meet the national CAZ emissions standards.