Truck and Bus Regulations Reporting
California's Truck and Bus Regulation requires diesel vehicles over 14,000 lbs GVWR that operate in the state to run a 2010 or newer engine and to be reported in TRUCRS. We handle the reporting, so your trucks stay on the road and your DMV registration stays clear.
- Guidance through the TRUCRS reporting requirements
- Fleet and engine details prepared and submitted for you
- Motor carrier and responsible-official information filed correctly
How it works
The Truck and Bus Regulation is a California Air Resources Board rule that has been cutting diesel emissions from heavy-duty vehicles since 2008. It covers diesel trucks and buses with a gross vehicle weight rating over 14,000 lbs that are registered in California or drive on its public roads — whichever state they are plated in.
Compliance is shown through TRUCRS, the Truck Regulation Upload, Compliance and Reporting System: the owner reports the fleet with its engine details, and once the report is verified the compliance certificate is issued. The DMV checks that status before it renews a registration.
We collect the details from you, prepare and submit the TRUCRS report, and email you the certificate when it is issued — $75 per vehicle, with no extra charges.
Get StartedWhat's included
- Guidance through the TRUCRS reporting requirements
- Fleet and engine details prepared and submitted for you
- Motor carrier and responsible-official information filed correctly
- Compliance certificate emailed to you when TRUCRS issues it
- Email and text reminders before your next reporting deadline
Who does not need to report
Vehicles that do not run on diesel — battery-electric, fuel-cell or gasoline-only — are outside the Truck and Bus Regulation and do not report in TRUCRS.
Personal-use motor homes and recreational vehicles, emergency vehicles such as fire trucks and ambulances, transit buses covered by CARB's separate transit fleet rules, and most non-federal public agency and utility vehicles follow other requirements and are exempt from this one.
Not sure whether a vehicle qualifies? Start the application and tell us about it — we confirm before anything is filed.
Four steps to your certificate
- Step 01
Step 1: Tell us about the fleet
Your contact details, the entity, the motor carrier ID the report is filed under (USDOT, CA, IRP or PUC) and whether you already have a TRUCRS account.
- Step 02
Step 2: Add each vehicle
VIN, license plate, GVWR class, registration type, purchase date and the engine's manufacturer, model year and family name.
- Step 03
Step 3: Review and pay
Check every detail, then pay $75 per vehicle by card. No extra fees.
- Step 04
Step 4: We file, you get the certificate
We enter the report in TRUCRS and email you the compliance certificate as soon as CARB issues it.
Who needs to report
If any of these describe you, you're in the right place — we take the filing from here.
Start your application- Diesel trucks and buses over 14,000 lbs GVWR registered in California
- Out-of-state fleets that operate on California public roads
- Owner-operators and fleets with 2010 or newer engines who need a compliance certificate for DMV registration
- Vehicles bought or brought into California that have never been reported
Truck and Bus Regulation questions
What does the reporting process look like?
You give us the vehicle details — VIN, license plate, GVWR class, registration type and engine information — and we enter them into TRUCRS on your behalf. Once CARB verifies the report, you receive your compliance certificate by email.
Do I need a 2010 or newer engine?
Yes. Since January 1, 2023 every vehicle covered by the Truck and Bus Regulation must have a 2010 or newer model-year engine. A vehicle with an older engine cannot be brought into compliance by reporting alone — it needs a newer engine before it can be certified.
My trucks are registered outside California. Do I still need to report?
If they operate on California public roads, yes. The regulation follows where the vehicle drives, not where it is plated. Vehicles that never enter California do not need to report.
What is a TRUCRS account, and do I need one?
TRUCRS is CARB's online reporting system. If your company already has an account we update it; if not, we set the reporting up under your motor carrier identification (USDOT, CA, IRP or PUC number). Tell us which case applies on the application form.
Is the Truck and Bus Regulation the same as Clean Truck Check?
No. Clean Truck Check is CARB's periodic emissions testing program; the Truck and Bus Regulation sets the engine-age requirement and the TRUCRS reporting. Most heavy-duty diesel fleets need both, and we handle each as a separate service.
What happens if I do not comply?
CARB can issue fines, and the DMV can refuse to renew the registration of a non-compliant vehicle, which stops it from operating legally. Reporting on time avoids both.
Also handled for you
Apply for Clean Truck Check Reporting
Submit your vehicle information, and our team will prepare and submit Clean Truck Check reporting through CARB’s CTC-VIS system, helping you avoid filing errors and unnecessary delays.
Learn moreRenew CARB Certificate
Keep your vehicles compliant with timely Clean Truck Check renewals and accurate, up-to-date records.
Learn moreAdd Vehicle to CTC account
For the first truck, the fee is $95. If you add additional vehicles, each additional truck will be $75.
Learn moreApply for a 5-Day Pass
Obtain temporary authorization for eligible vehicles to operate in California for up to 5 days while full compliance is pending.
Learn moreTruck and Bus Regulations Renewal
Keep your Truck and Bus Regulation compliance current — we update your TRUCRS report for the new reporting year and send you the renewed certificate.
Learn moreReady to get your fleet reported?
Start your application now, or call us and we'll walk you through Truck and Bus Regulations Reporting step by step.