Posted March 10, 2026: California's Clean Truck Check program requirements are in effect for subject vehicles, including vehicles registered outside of California when operating in the state to report, pay an annual compliance fee, and submit required passing emissions tests.

Welcome to the California Clean Truck Check, Vehicle Inspection System (CTC-VIS) Portal

The California Air Resources Board (CARB) is the primary state agency responsible for actions to protect public health from the harmful effects of air pollution and Clean Truck Check is a critical component of this mission.

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Disclaimer: By signing up for a CTC-VIS account, users agree to receive official communication from CARB regarding their fleet to the email address registered in their CTC-VIS account. Communication may include periodic testing information and enforcement notifications such as citations, Notices to Submit to Testing (NST), and other actions. Any updates to the email address must be updated in CTC-VIS.

UNAUTHORIZED ACCESS TO ANY STATE OF CALIFORNIA COMPUTING SYSTEM IS A CRIMINAL VIOLATION OF PENAL CODE SECTION 502 AND/OR APPLICABLE FEDERAL LAW AND IS SUBJECT TO PROSECUTION. Accessing any system while exceeding one’s authorization or in ways not intended by the State of California shall be subject to prosecution. Information reported in this system will be used in program related research and in some cases provided to other involved government entities.