Clean Truck Check Credentialed Tester

Clean Truck Check in Mayfield, KY

1 credentialed tester in Mayfield.

Testers in Mayfield

Nearest in-person tester to Mayfield

The closest CARB-credentialed Clean Truck Check tester is Carter Express, Inc. in Paragould, Arkansas — about 115 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Graves 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
24
Trucking employees
87

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

Freight corridors near Mayfield

Mayfield sits on I-69, US-45, US-45-Bypass, KY-121, KY-121-Business and KY-129. 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 Mayfield. Useful for routing a service stop around your CTC test.

+1 more within 25 miles.

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