Skip to main content
  • twitter
  • youtube
  • linkedin
  • email
  • Calendar
  • Help & FAQs
  • Contact
  • Careers
  • Display Settings
  • English
  • Español
California Gov

California Air Resources Board

Main navigation

  • About
  • Our Work
  • Resources
  • Services
  • Rulemaking
  • News
  • Equity

HD I/M Fact Sheets

  • Heavy-Duty Diesel Inspection & Periodic Smoke Inspection Programs
    • About
    • News
    • Resources
    • Fact Sheets
    • Subscribe

Contact

HD Vehicle Enforcement
Email
HDVehicleEnforcement@arb.ca.gov
Phone
(916) 229-0492

Fact sheets for the Heavy-Duty Inspection and Maintenance Program (HD I/M):

  • HD I/M Regulation: Vehicle Owner Basics
  • HD I/M Program Background and Regulation Basics
  • Periodic HD I/M Testing Requirements
  • HD I/M Tester Training and Examination
  • On-Board Diagnostics (OBD) Testing Devices

Information booklets for the Periodic Smoke Inspection Program:

  • PSIP Booklet September 2020 
  • PSIP Booklet November 2020 (Spanish)

Contact Us

(800) 242-4450  |  helpline@arb.ca.gov 
1001 I Street, Sacramento, CA 95814
P.O. Box 2815, Sacramento, CA 95812

Covid-19 logo

 

  • twitter
  • youtube
  • linkedin
  • email
  • Accessibility
  • Privacy Policy
  • Conditions of Use
  • Air Districts
  • Register to Vote
California Governor
Gavin Newsom Opens a New Window.
Secretary for Environmental Protection
Yana Garcia Opens a New Window.
Chair, California Air Resources Board
Liane M. Randolph Opens a New Window.

The California Air Resources Board is one of six boards, departments, and offices under the umbrella of the California Environmental Protection Agency.

  • CalEPA
  • CalRecycle
  • DPR
  • DTSC
  • OEHHA
  • SWRCB

Copyright © 2023 State of California