Clean Truck Check Credentialed Tester

Clean Truck Check in Grayson, KY

1 credentialed tester in Grayson.

Testers in Grayson

Nearest in-person tester to Grayson

The closest CARB-credentialed Clean Truck Check tester is Khayrulla Khamrajanov in Dayton, Ohio — about 120 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Carter 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
8
Trucking employees
24

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

Freight corridors near Grayson

Grayson sits on I-64, US-60, AA, KY-1, KY-1496 and KY-180. 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 Grayson. Useful for routing a service stop around your CTC test.

+2 more within 25 miles.

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