The California Air Resources Board (CARB) has posted Guidance on Upcoming Requirements in Clean Truck Check on CARB’s webpages. These guidance documents provide further information on the expected start date of Clean Truck Check periodic compliance testing in 2024 and projected compliance deadlines for vehicles subject to semiannual (twice per year) testing.
Please note that California registered motorhomes and heavy-duty vehicles used exclusively in agricultural operations (California registered and non-California registered) are required to undergo periodic compliance testing annually, rather than semiannually.
CARB will continue to release additional information and conduct training sessions to support vehicle owners and other regulated entities with meeting their upcoming compliance requirements.
If you have any questions regarding the program, please send an email to hdim@arb.ca.gov.
CARB Clean Truck Check (HD I/M) Team
