Clean Truck Check Credentialed Tester

Clean Truck Check in Union, SC

1 credentialed tester in Union.

Testers in Union

Nearest in-person tester to Union

The closest CARB-credentialed Clean Truck Check tester is corey jones in Church Hill, Tennessee — about 139 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
10
Trucking employees
76

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

Freight corridors near Union

Union sits on US-176, SC-121, SC-146, SC-18, SC-18-Truck and SC-211. 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 Union. Useful for routing a service stop around your CTC test.

+7 more within 25 miles.

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