Clean Truck Check - Credentialed Testers & Testing Devices
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Posted March 10, 2026: 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.
How to become a Clean Truck Check Credentialed Tester
Becoming a Tester & Creating a CTC-VIS Account | Fact Sheet, Videos, & FAQs | Testing Resources/Field Issues |
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| How to become a Clean Truck Check Credentialed Tester | Test Results FAQ | |
| Credentialed Tester Account User Guide | Vehicles of Interest (Field Issues) | |
| Testers Marketing Materials |
OBD Resources | Non-OBD Test Resources |
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