Clean Truck Check Credentialed Tester

Clean Truck Check in Winona, MN

1 credentialed tester in Winona.

Testers in Winona

Nearest in-person tester to Winona

The closest CARB-credentialed Clean Truck Check tester is Jacob Poole in Cedar Rapids, Iowa — about 146 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Winona 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
35
Trucking employees
282

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

Freight corridors near Winona

Winona sits on I-90, US-14, US-61, Hiawatha-Pioneer-Trail/Disabled-American-Veterans-Highway/Voyageur-Highway, MN-43 and WI-35. 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 Winona. Useful for routing a service stop around your CTC test.

+1 more within 25 miles.

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