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