Many of the California regulations have different compliance deadlines based upon various factors such as:

• Small versus large business entity
• Exemptions

A shortcut to understanding which CARB regulations apply to your operation, visit the CARB "TRUCK STOP" at: http://www.arb.ca.gov/msprog/truckstop/truckstop.htm. The information link for "Diesel Vehicles" will take you to a questionnaire that when filled in will automatically inform you of which regulations apply to your operation.

To take advantage of exemptions or compliance extensions, you must notify CARB and register with the agency for each of the regulations which affect you as a motor carrier.  For more details than provided below, including the actual text of each regulation, go to: http://www.arb.ca.gov/diesel/mobile.htm.

Emission Control Labels (ECL's)

• CARB guidance here.

Statewide Truck and Bus Regulation

• Compliance Requirements Summary here.
• Small Fleet Compliance Options here.
• Agricultural Exemption here.
• Truck Regulations Upload and Compliance Reporting System (TRUCRS) here.

Tractor-Trailer Greenhouse Gas Regulation

• Overview of CARB Greenhouse Gas Regulation here.(a.k.a. Smartway regulation)
• Compliance Information for Large Fleets here.
• Compliance Information for Small Fleets here.
• Short-Haul Exemptions here.
• Local-Haul Exemptions here.
• Low Rolling Resistance Tire Information here.

Transport Refrigeration Unit (TRU) Regulation

• TRU overview here.

Drayage Truck Regulation

• DTR overview here.

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