Clean Truck Check Credentialed Tester

Clean Truck Check in Washington, IN

1 credentialed tester in Washington.

Testers in Washington

Nearest in-person tester to Washington

The closest CARB-credentialed Clean Truck Check tester is Styline Diesel Service in Huntingburg, Indiana — about 27 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Daviess 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
41
Trucking employees
628

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

Freight corridors near Washington

Washington sits on I-69, US-150, US-231, US-50, SR-358 and SR-56. 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 Washington. Useful for routing a service stop around your CTC test.

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