What Is California’s Clean Truck Check Program?
California’s Clean Truck Check is a state emissions program for qualifying heavy-duty vehicles operating on California public roads. Formally established under the Heavy-Duty Vehicle Inspection and Maintenance Regulation, it generally covers qualifying diesel and alternative-fuel vehicles with a GVWR over 14,000 pounds, including certain vehicles registered outside California.
Covered vehicles are subject to program requirements that include vehicle reporting, applicable compliance fees, and required emissions testing.
14,000+ lbsGVWR threshold
HD I/MInspection and Maintenance Regulation
CTC-VISState reporting system
In and out of stateQualifying vehicles on California roads
How Our Third-Party Reporting Service Works
Submit your vehicle information and choose the reporting service you need. As an independent third-party service, we assist with submitting your information through CTC-VIS and provide confirmation and applicable next steps.
- Step 01
Enter Your Vehicle Details
Provide your VIN, license plate number, vehicle details, fuel type, GVWR and registration information.
- Step 02
Choose Your Reporting Service
Select the service you need: new account reporting, annual reporting, vehicle addition or an eligible 5-Day Pass request.
- Step 03
Review Your Information
Check your details, especially the VIN and license plate number, before submitting to help prevent reporting errors.
- Step 04
Submit and Receive Confirmation
Submit your information and payment to us. You’ll receive a payment receipt, followed by confirmation of the reporting service completed and any applicable next steps.
Third-Party Reporting Services
Choose the reporting assistance you need. As an independent third-party service, we help submit information and account updates through CTC-VIS or TRUCRS, depending on the service selected.
Which Vehicles Are Subject to California’s Clean Truck Check Program?
Clean Truck Check applies to diesel and alternative-fuel vehicles over 14,000 lbs GVWR operating on California roads, including both in-state and out-of-state fleets. Requirements may vary based on the vehicle’s registration, classification, and use. This includes diesel, diesel-hybrid, natural gas, and other alternative-fuel vehicles.
Eligible Vehicle Types
14,000+ lbs
Gross Vehicle Weight RatingDiesel and alternative fuel vehicles with a Gross Vehicle Weight Rating (GVWR) over 14,000 pounds.
- Commercial & Transit Vehicles
- Transit and school buses
- Motorcoaches
- California-registered motorhomes
- Agricultural vehicles
- Heavy-duty hybrid vehicles
- Box trucks
- Single-vehicle operations and fleets
- Refrigerator trucks
California-Registered Vehicles
Covered California-registered vehicles are subject to program requirements that may include CTC-VIS reporting, the applicable compliance fee and required emissions testing by assigned deadlines.
What Are the Clean Truck Check Compliance Requirements?
Covered vehicles must meet applicable program requirements for vehicle eligibility, CTC-VIS reporting, compliance fees and emissions testing. Once the applicable requirements are completed, the state determines the vehicle’s compliance status and certificate availability.
Requirement 01 / 06
Gross Vehicle Weight Rating (GVWR)
Clean Truck Check generally applies to covered vehicles with a GVWR over 14,000 pounds operating on California public roads.
Requirement 02 / 06
Covered Fuel Types
The program covers qualifying diesel, diesel-hybrid, natural gas and other alternative-fuel vehicles. Battery-electric and hydrogen fuel-cell vehicles are not subject to the program.
Requirement 03 / 06
Required Emissions Testing
Most covered vehicles currently require emissions testing twice each year, while qualifying agricultural vehicles and California-registered motorhomes are tested annually. Beginning October 1, 2027, OBD-equipped vehicles transition to quarterly testing.
Requirement 04 / 06
Emissions Testing Process
Required emissions testing must be completed by a credentialed tester using an approved testing method. Test results are submitted through the state system as part of the compliance process.
Requirement 05 / 06
CTC-VIS Reporting
Covered vehicles must have the required information reported through CTC-VIS. This includes vehicle and registration details such as the VIN, license plate number, GVWR and registration jurisdiction.
Requirement 06 / 06
Annual Compliance Fee
An annual compliance fee applies to each covered vehicle and is part of maintaining compliance with the program.
Need Help With Clean Truck Check Reporting?
Get third-party reporting assistance for CTC-VIS. Choose the service you need and submit your vehicle information to our team online.
Start Your Reporting RequestSimple, transparent pricing
See the price for our third-party reporting assistance before submitting your request. Services start at$95 for the first vehicle, with applicable state fees included where specified.
New CTC-VIS Reporting Assistance
California state emissions fee included. No surprises at checkout.
Apply NowFrequently Asked Questions
What does California-CARB.com do?
California-CARB.com is an independent third-party reporting service. We help vehicle owners and fleets complete Clean Truck Check reporting through CARB’s CTC-VIS system, including new registrations, renewals, vehicle additions, and eligible 5-Day Pass requests.
We do not perform emissions testing, determine whether a vehicle is compliant, or issue Clean Truck Check compliance certificates.
Are you affiliated with the California Air Resources Board (CARB)?
No. California-CARB.com is an independent third-party service and is not affiliated with, endorsed by, or operated by the California Air Resources Board.
Our role is limited to reporting and filing assistance through systems such as CTC-VIS.
What happens after I submit my reporting request?
After you submit your information and payment, our team reviews the details provided and prepares the applicable CTC-VIS filing.
You will receive a payment receipt first, followed by reporting confirmation, available status information, and any applicable next steps. If emissions testing is required, we can also provide information about finding a CARB-credentialed tester.
How much does Clean Truck Check reporting assistance cost?
New Clean Truck Check reporting, renewals, vehicle additions, and 5-Day Pass filing assistance start at $95 for the first vehicle. Additional vehicles submitted together may qualify for the applicable additional-vehicle rate.
The price and any applicable state fee included with the selected service are shown before payment. Emissions testing is separate and is not included in our reporting service price.
Is my payment secure?
Payments are completed through the website’s secure checkout process. The applicable service price is displayed before you submit payment so you can review the amount before completing your request.
What is the CARB Clean Truck Check program?
Clean Truck Check, formally known as California’s Heavy-Duty Inspection and Maintenance (HD I/M) Program, is an emissions program for qualifying heavy-duty vehicles operating on California public roads.
Covered vehicles must meet applicable requirements that can include CTC-VIS reporting, compliance fees, and emissions testing.
Have Questions About Reporting Requirements?
Need help choosing a reporting service or understanding your next step? Call, email or send us a message. As an independent third-party reporting service, we can assist with CTC-VIS reporting, annual reporting, vehicle additions and eligible 5-Day Pass requests.
Legal and Transparency Disclaimer
Independent Third-Party Reporting Service: California-CARB.com is an independent third-party reporting service. We are not affiliated with, endorsed by, authorized by, or operated by the California Air Resources Board or any California state agency.
Reporting Assistance Only: We provide third-party assistance with submitting required vehicle information through CTC-VIS. We do not determine vehicle compliance, perform government functions, or issue compliance certificates.
Service and State Fees: Our third-party service fees and any applicable state fees included in the total price are disclosed before you submit your reporting request. Emissions testing fees are separate and are not included unless expressly stated.
Emissions Testing Is Separate: We do not perform emissions testing. When testing is required, it must be completed separately by a credentialed tester using an approved testing method.
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