Clean Truck Check Credentialed Tester

Clean Truck Check in Defiance, OH

1 credentialed tester in Defiance.

Testers in Defiance

Nearest in-person tester to Defiance

The closest CARB-credentialed Clean Truck Check tester is Parrish Leasing Inc in Fort Wayne, Indiana — about 40 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Defiance 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
30
Trucking employees
599

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

Freight corridors near Defiance

Defiance sits on US-127, US-24, US-6, US-6-Business, SR-108 and SR-110. 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 Defiance. Useful for routing a service stop around your CTC test.

+5 more within 25 miles.

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