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Truck Regulations

More Truck Regulation Information

Truck and Bus Regulation

The California Air Resources Board (ARB) approved the Truck and Bus regulation in December 2008 and has made several major changes since that time. The most recent set of changes were approved by the ARB April 25, 2014. While these April 2014 changes cannot be finalized until approved by the Office of Administrative Law (OAL), ARB is enacting the changes administratively and has released regulatory advisories so that you can begin to take advantage of these amendments prior to OAL approval.
The information below first describes the rule as it applies to agricultural vehicles and also gives the basic information about several options if you are not eligible to be registered as an agricultural vehicle.
The options are listed in order of likelihood that a truck or bus owner that is in the agricultural industry could likely utilize them. Please note there are other options not listed that can be found at the ARB website listed below. If none of the compliance options fit your needs, information about the engine model schedule for the truck and bus rule is in the eighth section.
Agricultural Mileage Extension
Low-Use Vehicle Option
Log Truck OptionNOx
Exempt Option Low-Mileage Work Truck Option
Small Fleet Option
Economic Hardship Option
General Engine Model Year Compliance Schedules for Light and Heavy Trucks

Where can I get more information?
Fact sheets, compliance tools and regulatory documents about the Truck and Bus Regulation are available at www.arb.ca.gov/dieseltruck. If you have questions or wish to obtain documents in an alternative format or language, please call ARB’s diesel hotline at (866) 6DIESEL (634-3735). TTY/TDD/Speech to Speech users may dial 711 for the California Relay Service.
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