Clean Truck Check Credentialed Tester

Clean Truck Check in Whitewater, WI

1 credentialed tester in Whitewater.

Testers in Whitewater

Nearest in-person tester to Whitewater

The closest CARB-credentialed Clean Truck Check tester is DOT Truck and Trailer Repair Co in Big Bend, Wisconsin — 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 Walworth 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
91
Trucking employees
343

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

Freight corridors near Whitewater

Whitewater sits on I-39, I-39-ALT, I-90, I-90-ALT, US-12 and US-12-Business. 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 Whitewater. Useful for routing a service stop around your CTC test.

+4 more within 25 miles.

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