Clean Truck Check Credentialed Tester

Clean Truck Check in Winchester, IL

1 credentialed tester in Winchester.

Testers in Winchester

Nearest in-person tester to Winchester

The closest CARB-credentialed Clean Truck Check tester is Kendall Aschenbrenner in Rochester, Illinois — about 48 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Scott 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
7
Trucking employees
8

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

Freight corridors near Winchester

Winchester sits on I-72, I-72-Bus, I-72-Business, US-36, US-67 and IL-100. 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 Winchester. Useful for routing a service stop around your CTC test.

Source: © OpenStreetMap contributors. Last updated 2026-05-27.