Clean Truck Check in Gaithersburg, MD

Nearest in-person tester to Gaithersburg

The closest CARB-credentialed Clean Truck Check tester is MEJIA'S TRANSPORT LLC in Frederick, Maryland — about 20 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Montgomery 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

183

Trucking employees

1,235

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

Freight corridors near Gaithersburg

Gaithersburg sits on I-270, I-270-Spur, I-370, I-495, US-29 and GWMP. 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).