Clean Truck Check in Spencer, IA

Nearest in-person tester to Spencer

The closest CARB-credentialed Clean Truck Check tester is Ernest Yurkoits in Sioux Falls, South Dakota — about 84 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Clay 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

21

Trucking employees

103

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

Freight corridors near Spencer

Spencer sits on US-18, US-71 and IA-86. 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).