What is the HD I/M program?
- Mandates that in order to operate in California, all heavy-duty non-gasoline vehicles with a GVWR of more than 14,000 pounds must pass emissions checks.
- Comparable to a Smog Check program for large trucks.
- To assure emissions control systems are maintained and working correctly, periodic inspections are necessary.
- Guarantees prompt repairs to reduce excess emissions.
Who is impacted by the HD I/M program?
- Owners and drivers of non-gasoline vehicles traveling in California with a GVWR exceeding 14,000 pounds.
- Testers who check HD I/M automobiles for compliance.
- Freight brokers and contractors who operate HD I/M trucks in California.
- California-based freight facilities that are appropriate and accept HD I/M-eligible trucks on their grounds.
- OBD test device manufacturers who create and market testing equipment used to conduct compliance checks on HD I/M automobiles.
Vehicles affected by the HD I/M Regulation
- All non-gasoline heavy vehicles operating in California with GVWR greater than 14,000 lbs.
- All diesel, alternative fuel and hybrid vehicles.
- All California licensed, out-of-state (OOS) and out-of-country vehicles operating in California.
- Zero-emission heavy-duty vehicles.
- Emergency vehicles.
- Tactical military vehicles.
- Motor homes registered outside of California used for recreational purposes.
- New vehicles with engines certified to most stringent optional NOx standard (only for first 4 years of the program).
- Vehicles with a permanent Historical Vehicle License Plate.
- *Vehicles operating under a CARB-issued experimental permit.
- **OOS vehicles operating under a Governor’s emergency declaration.
- Gasoline heavy-duty vehicles already covered under the Bureau of Automotive Repair’s Smog Check program.
Vehicle Owner Requirements
- Vehicle owners must ensure all their vehicles operating in California are compliant.
A vehicle is compliant with the HD I/M requirements when:
- There are no outstanding enforcement actions.
- The annual vehicle compliance fee is paid(Effective no earlier than 7/1/2023).
- The owner and vehicle information has been reported (Effective no earlier than 7/1/2023).
- The vehicle is compliant with the periodic emission testing requirements (Effective no earlier than 1/1/2024).
- Existing Periodic Smoke Inspection Program requirements apply until HD I/M periodic compliance testing begins in 2024 timeframe.
- Official start dates dependent on the rollout of the HD I/M program database. CARB will provide notice prior to effective dates.
Vehicle Owner Requirements at Program Launch for HD I/M
- Starting 1/1/2023
- High-Emitter vehicle screening
- Remote emissions monitoring systems (REMS) to detect emissions from moving vehicles
- A Notice to Submit to Testing (NST) will be issued to any vehicles in California that have been identified as potential high emitters.
Notice to Submit to Testing (NST)
- NST mandates further testing for vehicles.
- Must provide CARB with a valid vehicle compliance test within 30 days.
- If a passing compliance test isn’t provided within 30 days, the HD I/M program will not be followed, and enforcement action may be taken.
Reporting & Compliance Fees for Owners
- HD I/M database is now being developed.
- Vehicle owners will be required to record fleet and vehicle information and pay a $30 per vehicle yearly compliance charge.
- Identify the qualifying vehicles within your fleet by creating an account in the HD I/M database.
- To avoid duplicating reporting tasks, the HD I/M database will extract vehicle information from existing CARB databases.
- Annual compliance costs will be paid through a vehicle owner’s account page.
Compliance & Reporting Fee Schedule
Requirements for reporting and compliance fees won’t go into effect until July 1, 2023:
- At least 90 days’ notice is required before these restrictions take effect.
- Updates are accessible on the HD I/M and CARB Truckstop websites.
- The website for the HD I/M program is available at: https://ww2.arb.ca.gov/our-work/programs/heavy-duty inspection-and-maintenance-program
- The website for Truckstop may be found at: https://ww2.arb.ca.gov/sites/default/files/truckstop/hdim/hdim.html
- Sign up for the HD I/M email notification service to get the most recent details on the rollout and timeframe:
- Before the primary reporting is required, tutorials for the HD I/M database will be made accessible.