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CARB Clean Truck Check registration deadline pushed to January 31, 2024

CARB Clean Truck Check registration deadline pushed to January 31, 2024

CARB is extending the Clean Truck Check registration deadline to January 31, 2024, allowing vehicle owners additional time to complete their initial fleet reporting and meet the 2023 $30 compliance fee for each truck. 

Vehicles must be registered in the California Clean Truck Check, Vehicle Inspection System (CTC-VIS) portal. 

California Senate Bill 210 directed CARB to develop and implement a comprehensive heavy-duty vehicle inspection and maintenance (HD I/M) regulation to ensure that vehicles’ emissions control systems are properly functioning when traveling on California’s roadways. The Board approved the regulation on December 9, 2021, with implementation to be phased in starting January 2023.

According to CARB, the “Clean Truck Check,” combines periodic vehicle testing requirements with other emissions monitoring techniques and expanded enforcement strategies to “identify vehicles in need of emissions related repairs and ensure any needed repairs are performed.”

This does impact Pennsylvania fleets. Nearly all diesel and alternative fuel heavy-duty trucks, buses, and other vehicles with a gross vehicle weight rating over 14,000 pounds that operate in California are subject to semiannual testing and the projected compliance deadlines presented in Table I and Table II below. Affected vehicles include hybrid trucks and buses, commercial vehicles, privately-owned vehicles, government vehicles, and vehicles registered outside of California. For information on vehicles that are exempt from Clean Truck Check, click here: Fact Sheet: Heavy-Duty Inspection and Maintenance Program: Background and Requirements.

More information on the program can also be found here:

Vehicles identified as potential high emitters will receive a “Notice to Submit to Testing” and are required to submit a passing compliance test to CARB within 30 days of receipt of the notice.

The second phase of the program was rolled out in September, requiring owners to register their trucks and pay the annual compliance fee.

Before implementation of the final phase of the program, CARB is required to announce an effective date at least 90 days before the date.

As such, as of April 1, 2024, vehicles subject to the regulation must pass an emissions compliance test twice per year.

There are seven credentialed testers in PA, but it appears they are carriers that test their own trucks: Available for Hire Credentialed Testers | California Air Resources Board.

If you can’t find a tester, you can become a credentialed tester here: Tester Training Course and Exam | California Air Resources Board.

The Nevada Trucking Association has a webinar available to learn more, link here.

CARB is planning to hold a training webinar on the database on January 9, 2024 from 1:30pm to 5:00pm PST. Register and submit questions here:

The contact for the Clean Truck Check on CARB’s website is


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