Clean Truck Check in Dayton, WA

Nearest in-person tester to Dayton

The closest CARB-credentialed Clean Truck Check tester is JJ Keller in Richland, Washington — about 62 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Columbia County

Clean Truck Check applies to heavy-duty vehicles that operate in California — including out-of-state trucks based here that run loads west.

Trucking establishments

3

Trucking employees

8

Source: FMCSA MCMIS carrier census, US Census County Business Patterns 2021.

Freight corridors near Dayton

Dayton sits on US-12 and WA-124. 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).