Clean Truck Check Credentialed Tester

Clean Truck Check in North Sioux City, SD

1 credentialed tester in North Sioux City.

Testers in North Sioux City

Nearest in-person tester to North Sioux City

The closest CARB-credentialed Clean Truck Check tester is Ernest Yurkoits in Sioux Falls, South Dakota — about 71 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Union 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
196

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

Freight corridors near North Sioux City

North Sioux City sits on I-129, I-29, I-29-Business, US-20, US-20-Bus and US-20-Business. 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 North Sioux City. Useful for routing a service stop around your CTC test.

+5 more within 25 miles.

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