Clean Truck Check Credentialed Tester

Clean Truck Check in Princeton, IL

1 credentialed tester in Princeton.

Testers in Princeton

Nearest in-person tester to Princeton

The closest CARB-credentialed Clean Truck Check tester is Ciongas & CO in Plainfield, Illinois — about 64 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Bureau 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
36
Trucking employees
359

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

Freight corridors near Princeton

Princeton sits on I-180, I-80, US-34, US-6, IL-26 and IL-29. 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 Princeton. Useful for routing a service stop around your CTC test.

+6 more within 25 miles.

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