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Truck and Bus Regulation

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Mobile Source Control Division

The Truck and Bus regulation is necessary to meet federal attainment standards, because 70% of the cancer risk from airborne toxics is from diesel exhaust. This regulation requires heavy-duty diesel vehicles that operate in California to reduce toxic air contaminants (TACs) emissions from their exhaust. Therefore, by January 1, 2023, nearly all trucks and buses will be required to have 2010 or newer model year engines to reduce particulate matter (PM) and oxides of nitrogen (NOx) emissions. To help ensure that the benefits of this regulation are achieved, starting in 2020, only vehicles compliant with this regulation will be registered by the California Department of Motor Vehicles (DMV).
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TRUCRS Reporting System

Vehicles using extensions or compliance options must be reported annually if they wish to continue using the option for the following year.

Reporting
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Fact Sheets

Answers to common questions

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Verify Fleet Compliance

Check compliance status

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Senate Bill 1 Information

DMV Registration Impacted

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Lawson/CTA Lawsuit

Due to the court’s ruling in the CTA/Lawson Lawsuit, flexibility options that could be claimed before the Lawson Rock & Oil, Inc. v. CARB decision became final in 2018 will not be available in 2019 or may have different eligibility criteria. Fact sheets and regulatory documents are being updated, and will be available in December 2018. The compliance requirements for options that remain available in 2019 and future compliance years are as follows with the following limitations, modifications or requirements.

 

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