If you operate a diesel truck in California, Clean Truck Check registration is no longer optional—it's the law. Whether you're managing a fleet or you're an independent operator, registering your vehicle in the CTC-VIS portal (California’s Clean Truck Check Vehicle Inspection System) is your first step toward compliance.
This guide walks you through how to complete your Clean Truck Check registration online, how to access your account via the CARB Clean Truck Check login, and where to get help if needed.
What Is Clean Truck Check Registration?
California’s Clean Truck Check program—formerly known as HD I/M—requires nearly all diesel and alternative fuel trucks over 14,000 pounds GVWR to pass periodic emissions testing. But before you can test, you must register your truck online with CARB.
This is done through the CTC-VIS portal (also referred to as Cal VIS), which stands for Clean Truck Check – Vehicle Inspection System.
Step-by-Step: Clean Truck Check Registration Online
1. Go to the Official Clean Truck Check Portal
Start by visiting the official California Air Resources Board (CARB) website: https://cleantruckcheck.arb.ca.gov
This is the official Clean Truck Check login portal where all vehicle owners must register.
2. Create Your Account
Click “Register” to create a new account. You'll need:
- Full name and contact information
- Valid email address
- Password and security information
After registering, you’ll be able to log in to the CARB Clean Truck Check dashboard to manage your vehicles.
3. Add Your Vehicle Information
Once logged in:
- Click “My Vehicles”
- Select “Add Vehicle”
- Enter your VIN, license plate number, state of registration, vehicle year, and fuel type
Each vehicle must be registered individually.
4. Pay the Annual Compliance Fee
CARB requires a $30 annual compliance fee per vehicle. You can pay via credit card or e-check. Paper checks are not accepted.
This payment must be made before testing, or your truck will not be considered compliant.
5. Schedule Emissions Testing
After registration and payment, you’ll need to schedule your emissions test with a CARB-credentialed testing provider (like FleetFox). The results must be uploaded to the system directly by your tester.
CARB will not accept self-submitted tests—only certified testers can submit on your behalf.
Need Help? Clean Truck Check Phone Number & Support
If you get stuck during the process, you can contact CARB for technical support:
California Clean Truck Check Help Line:
📞 (866) 634-3735
🕐 Monday–Friday, 8 AM–5 PM PST
Or visit CARB’s Clean Truck Check help resources
FAQ: Clean Truck Check Registration
What is CTC-VIS?
CTC-VIS stands for Clean Truck Check – Vehicle Inspection System. It’s the portal you use to register vehicles, pay fees, and track testing compliance.
Where do I log in for Clean Truck Check?
Log in at cleantruckcheck.arb.ca.gov
Do I need to register before testing?
Yes. Registration and fee payment must happen before you schedule or complete your emissions test.
Final Thoughts
Registering your truck in the Clean Truck Check system is the first—and most critical—step to staying compliant with CARB’s emissions rules. Whether you're managing a fleet or just one vehicle, clean truck check registration online is simple when you follow the steps above.
Looking for a certified tester? FleetFox provides on-site CTC testing and uploads your results directly to CARB—fast, accurate, and compliant.
