Clean Truck Check Credentialed Tester

Clean Truck Check in Monroe, MI

1 credentialed tester in Monroe.

Testers in Monroe

Nearest in-person tester to Monroe

The closest CARB-credentialed Clean Truck Check tester is Sam's Truck & Trailer Repair in Toledo, Ohio — about 16 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Monroe 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
67
Trucking employees
803

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

Freight corridors near Monroe

Monroe sits on I-275, I-75, US-23, US-24, US-24-CONN and US-24-Connector. 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 Monroe. Useful for routing a service stop around your CTC test.

+14 more within 25 miles.

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