Services
Mobile HD I/M testing, done at your yard.
We perform on-board diagnostic (OBD) emissions testing for nearly every diesel and alternative-fuel truck, bus, and motorhome with a GVWR over 14,000 lbs.
What is Clean Truck Check?
Clean Truck Check is a California regulation requiring emissions control system testing on heavy-duty vehicles. It applies to nearly all diesel and alternative-fuel heavy-duty vehicles with a GVWR over 14,000 lbs that operate on California public roads, regardless of where they are registered.
At a glance
- Mobile OBD (HD I/M) testing, on-site
- Diesel and alternative-fuel heavy-duty vehicles
- GVWR over 14,000 lbs
- Southern California public roads and highways
- Results submitted directly to CARB
What is Clean Truck Check?
Covered vehicle types
- Motorcoaches
- Transit, shuttle, and school buses
- Commercial vehicles
- California-registered motorhomes
- Single-vehicle fleets
What to expect on-site
Fast arrival window
We confirm a specific time window before we arrive so your drivers and dispatchers can plan around it.
Minimal downtime
Each OBD test takes only a few minutes per covered vehicle. Most fleet visits finish in under an hour.
Results submitted for you
We handle CARB submission and give you documentation for your records. Zero paperwork on your end.