Clean Truck Check Credentialed Tester

Clean Truck Check in Lewiston, ID

1 credentialed tester in Lewiston.

Testers in Lewiston

Nearest in-person tester to Lewiston

The closest CARB-credentialed Clean Truck Check tester is JJ Keller in Richland, Washington — about 109 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Nez Perce 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
16
Trucking employees
323

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

Freight corridors near Lewiston

Lewiston sits on US-12, US-195, US-95, ID-128, WA-128 and WA-129. 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).

Nearby truck stops

OpenStreetMap-tagged truck stops, services areas, and HGV-marked fuel stations within 25 miles of Lewiston. Useful for routing a service stop around your CTC test.

Source: © OpenStreetMap contributors. Last updated 2026-05-26.