Clean Truck Check in Darlington, WI

Nearest in-person tester to Darlington

The closest CARB-credentialed Clean Truck Check tester is Woodstock Truck and Trailer Repair in Woodstock, Illinois — about 90 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Lafayette 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

25

Trucking employees

135

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

Freight corridors near Darlington

Darlington sits on US-151, US-151-Business, CTH-D, CTH-F, CTH-G and CTH-I. 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 Darlington. Useful for routing a service stop around your CTC test.

• Truck-friendly fuel stop
  HGV: yes · ~23 mi
  View on OpenStreetMap →

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