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Search credentialed Clean Truck Check testers by ZIP code or city — like “near me.” Built for truckers and trucking companies.
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Browse popular areas
California cities with the most listed testers.
Clean Truck Check, simplified
California’s Clean Truck Check is a heavy-duty inspection & maintenance program. This site summarizes publicly posted information so fleets and testers can orient themselves alongside official CARB guidance.
Numbers, dates, and legal requirements change — always confirm on CARB’s program “About” page before you rely on anything here.
- Heavy-duty I/MPeriodic emissions compliance testing for most heavy-duty vehicles operating in California.
- OBD & non-OBDTesters support on-board diagnostics and opacity / smoke testing methods.
- Mobile serviceMany testers come to your yard — filter for mobile-capable testers in seconds.
- Statewide coverageThousands of listed testers across California and neighboring regions.
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