Clean Truck Check (HD I/M) Back To All Programs Clean Truck Check (HD I/M)AboutNewsResources Vehicle Owner InformationCredentialed Testers & Testing DevicesVendor Information & Testing DevicesReporting Database (CTC-VIS)Referee Program Subscribe to Email Updates Primary Contact Clean Truck Check (HD I/M) Email hdim@arb.ca.gov Categories Topics Air Pollution, Enforcement, Health, On-Road Heavy-Duty Vehicles Resources Motorhome Fact Sheet – Clean Truck Check Clean Truck Check Compliance Fee Update Clean Truck Check FAQ Instructions for the Vehicle Emissions Control Equipment Inspection Form Information Freight Contractor, Broker-Clean Truck Check Requirements Information Agricultural Vehicles & California Motor Homes Annual Compliance Requirements Information Credentialed Tester Frequently Asked Questions (FAQs) Information Technical Analysis of End of Useful Life Scenarios - South Coast Information Technical Analysis of End of Useful Life Scenarios - Statewide