California Air Resources Board

On-Road Motorcycles (ONMC) include two- and three-wheeled motor vehicles which are intended for use on public roads. The California Air Resources Board (CARB) administers a program to reduce the air quality impact from this vehicle category. Staff has developed a regulatory proposal to further reduce emissions from ONMC by applying more stringent emissions standards and progressively increasing the number of zero-emission motorcycles sold each year, starting in model year 2028.
More about this program