On-Road Heavy-Duty Diesel Vehicles (In-Use) Regulation Contact Information

This page last reviewed February 22, 2010

Truck and Bus Regulation  
Contact Us  

Mailing Address:

California Air Resources Board
P.O. Box 2815
Sacramento, CA 95812-2815
Regulation Information and
Help Line:

E-mail: 8666diesel@arb.ca.gov
The regulation information help line and email were set up to answer questions about the Truck and Bus Regulation and other diesel regulation inquiries.