Clean Truck Check in White Sulphur Springs, MT

Nearest in-person tester to White Sulphur Springs

The closest CARB-credentialed Clean Truck Check tester is Western Transport inc. in Idaho Falls, Idaho — about 222 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Freight corridors near White Sulphur Springs

White Sulphur Springs sits on US-12 and US-89. Trucks running these routes into California fall under CARB’s Clean Truck Check — Smart CTC lets them test remotely without leaving the road.

Source: OpenStreetMap (© OpenStreetMap contributors).