Clean Truck Check in Rockwell City, IA

Nearest in-person tester to Rockwell City

The closest CARB-credentialed Clean Truck Check tester is Brown Nationalease in Urbandale, Iowa — about 69 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Calhoun 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

28

Trucking employees

112

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

Freight corridors near Rockwell City

Rockwell City sits on US-20, IA-175, IA-4 and IA-7. 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).