Clean Truck Check / DOT Inspections

What is California Clean Truck Check?

What Trucks are subject to this Regulation?


It is a regulation to test heavy-duty vehicles’ emissions control systems for proper operation. Clean Truck Check applies to nearly all diesel and alternative fuel heavy-duty vehicles with a gross vehicle weight rating (GVWR) over 14,000 pounds that operate on California public roads. This includes both in-state and out-of-state vehicles, as well as public vehicles (federal, state, and local government); motorcoaches; transit, shuttle and school buses; hybrid vehicles; commercial vehicles; personal vehicles; California registered motorhomes; single vehicle fleets; and vehicles registered outside of California.



DMV Registration Holds for Non-Compliant Trucks: Click for More Information


Western Truck Exchange is a Clean Truck Check Credentialed Tester

Compliance testing must be performed by a CARB credentialed tester. Western Truck Exchange is authorized to perform California

Clean Truck Check inspections, including smog checks, on-board diagnostic evaluations, smoke opacity testing, and visual emissions inspections. Western Truck Exchange provides Clean Truck Check testing for medium-duty and heavy-duty vehicles operating throughout California, helping truck owners stay compliant with CARB emissions regulations and avoid DMV registration holds.



Compliance testing must be performed by a CARB credentialed tester. Western Truck Exchange is authorized to perform California Clean Truck Check inspections, including smog checks, on-board diagnostic evaluations, smoke opacity testing, and visual emissions inspections. Western Truck Exchange provides Clean Truck Check testing for medium-duty and heavy-duty vehicles operating throughout California, helping truck owners stay compliant with CARB emissions regulations and avoid DMV registration holds.


Inspection Services We Offer


  • CARB Clean Truck Check testing
  • Smog checks
  • OBD evaluations
  • Smoke opacity testing
  • Visual emissions inspections
  • DOT inspection support
  • BIT inspection support
  • Fleet compliance support
  • DMV registration hold assistance


Schedule Clean Truck Check or DOT Inspection

Complete the form below and our service team will contact you to confirm your vehicle, compliance needs, and appointment availability.


Vehicle Being Serviced

Describe Service Needed