California Air Resources Board Contacts

For information on:	Call	Email
Engine upgrades, particulate filters, Truck Regulation Upload, Compliance, and Reporting System	866-634-3735	8666diesel@arb.ca.gov
Annual smoke opacity testing	866-634-3735	8666diesel@arb.ca.gov
Side skirts, low rolling resistance tires, SmartWay	866-634-3735	8666diesel@arb.ca.gov
Idling rules	916-322-8275
Port trucks (drayage)	888-247-4821	drayagetruck@arb.ca.gov
Transport Refrigeration Units	888-878-2826	tru@arb.ca.gov
Diesel Compliance Training	916-322-3937	arbtrain@arb.ca.gov
To report:	Call	Email
Non-compliant diesel trucks, other vehicles	800-363-7664
General air pollution complaints	800-952-5588	envirotip@arb.ca.gov