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All diesel fueled trucks, buses, trailers and transportation refrigeration units operating in California, including those based out of state, are required by regulations to take steps to reduce air pollution. Please call the California Air Resources Board Diesel Hotline at 866-6DIESEL (866-634-3735) for more information, or click the links below.


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Information About Clean Air Requirements For
DIESEL VEHICLES
Diesel Trucks
TRAILERS
Trailers
TRUs
Tru's
FUNDING
Funding
USEFUL LINKS
Useful Links

Highlighted Links
The purpose of this website is to assist the user in identifying legal requirements that may apply based on information submitted by the user.  This website may not indicate all legal requirements that may apply.  The user should not rely on the presentation of statutes or regulations referenced in this website, but should consult the actual text of each statute or regulation. Legal requirements frequently change and the user should seek the advice of counsel to determine what requirements apply to their situation.