Clean Truck Check in Duluth, MN

Nearest in-person tester to Duluth

The closest CARB-credentialed Clean Truck Check tester is Tony's Transfer inc in Wadena, Minnesota — about 144 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in St. Louis 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

70

Trucking employees

899

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

Freight corridors near Duluth

Duluth sits on I-35, I-535, US-2, US-53, CH-4 and CTH-C. 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 Duluth. Useful for routing a service stop around your CTC test.

• Truck-friendly fuel stop
  HGV: yes · ~7 mi
  View on OpenStreetMap →

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