California Air Resources Board

What are the Clean Truck Check requirements? 

Clean Truck Check is a California Air Resources Board (CARB) program to ensure emissions control equipment is operating properly, for heavy duty vehicles, which includes agricultural vehicles that operate in California.  

• Vehicles that are non-gasoline, over 14,000 pounds manufacturer's GVWR, and operate on California public roads or highways, are subject to Clean Truck Check and must be reported in Clean Truck Check, Vehicle Inspection System (CTC-VIS).  
  • Microsoft Edge browser should be used to report owner and vehicle information and to make compliance fee payments.
• Annual compliance fees need to be paid by the vehicle’s compliance deadline, which is shown in CTC-VIS.  
  • Payments must be made through your CTC-VIS account and may only be made by debit or credit card, or eCheck. Paper checks will not be accepted.  
• Emissions compliance testing requirements are effective October 1, 2024. Testing deadlines begin January 1, 2025, and require submission of a passing Clean Truck Check emissions compliance test by a credentialed tester. Compliance deadlines for agricultural vehicles are available at Agricultural Vehicles & California Motorhomes Annual Compliance Requirements.

What is an agricultural vehicle?

Clean Truck Check (Heavy-Duty Vehicle Inspection and Maintenance Regulation) defines an “agricultural vehicle” as a vehicle or truck-tractor trailer combination owned or operated by a farming business and used exclusively in agricultural operations to transport agricultural products to the first point of processing and does not include vehicles that do not directly support farming operations, such as personal use vehicles.

• First point of processing refers to the location where harvested crops, bees, fowl, fish, livestock, animals, or their products, such as wool, milk, or eggs, are first altered from their original state, or the first location where unaltered products are packaged and prepared for transportation.
• A first point of processing may include packinghouses, slaughterhouses, cotton gins, nut hullers/shellers and processors, dehydrators, lumber mills, feed and grain mills, and biomass facilities. For some crops, the first point of processing may be in the field, such as chipping wood.
• A first point of processing is not a location of the product’s final use and does not include distribution centers, wholesale and retail sales locations where the first processing of a product does not occur, livestock auction houses, and subsequent locations where processing, canning, or similar activities occur after departing a first point of processing location.

How do I test my agricultural vehicle?

Agricultural vehicles that operate in California are only required to undergo one emissions compliance test annually. These vehicles may be tested up to 90 days prior to the vehicle’s emissions compliance testing deadline to provide time for any necessary repairs. Emissions compliance tests must be performed by a Clean Truck Check credentialed tester. For specifics, please refer to Emissions Compliance Testing Requirements.

You may search for credentialed testers by location at Available for Hire Credentialed Testers. If you have questions about which testing method your vehicle should undergo, contact hdim@arb.ca.govfor guidance. 

What do I do if I have a CA DMV registration hold labeled Clean Truck Check (SB 210)? 

California Department of Motor Vehicles (CA DMV) automatically places registration holds on vehicles not compliant with Clean Truck Check. To avoid any potential registration holds, please ensure the vehicle is reported in CTC-VIS, annual compliance fees are paid, and annual emissions compliance testing requirements have been met. 

How do I determine my annual deadline if my vehicle has partial year registration?

Please contact the California Department of Motor Vehicles to confirm your annual registration expiration date. Your CTC-VIS account will reflect your compliance fee and emissions tests due dates.

How do I report my vehicle as meeting the definition of an Agricultural Vehicle?

To add a vehicle, follow the instructional video at Clean Truck Check - Reporting Resources (CTC-VIS).
In step 5 of the form, be sure to Click the Checkbox that states this VIN is an Agricultural Vehicle.

How do I attest that my vehicle is approved as an Agricultural Vehicle?

Please begin a new form by going to My entity, scroll to Vehicles, click Action next to the VIN in question, and choose edit vehicle.

If you have a current form open and do not see a Document Upload section. Go to your Main Menu, then Forms, In Progress, and delete any In Progress forms.

In the new vehicle form the document required to attest is provided in step 6 of the vehicle form. 

Once in step 6 click the highlighted text to download the form. Make sure to fully and accurately fill the form to prevent the system rejecting it.

This is the form. This is only an attestation that your vehicle meets the Clean Truck Check definition of Agricultural Vehicle.

Fill out the form and sign. Upload the form by clicking where you see Missing in step 6.

Upload your form.

Click Save.

In step 7, click the checkbox to sign the form and submit.