Clean Truck Check Credentialed Tester

Clean Truck Check in Columbus Junction, IA

1 credentialed tester in Columbus Junction.

Testers in Columbus Junction

Nearest in-person tester to Columbus Junction

The closest CARB-credentialed Clean Truck Check tester is Jacob Poole in Cedar Rapids, Iowa — about 49 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Louisa 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
19
Trucking employees
58

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

Freight corridors near Columbus Junction

Columbus Junction sits on US-218, US-61, IA-22, IA-27, IA-70 and IA-78. 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 Columbus Junction. Useful for routing a service stop around your CTC test.

+5 more within 25 miles.

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