Clean Truck Check in Leonardtown, MD

Nearest in-person tester to Leonardtown

The closest CARB-credentialed Clean Truck Check tester is Timothy Holt in Dundalk, Maryland — about 65 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in St. Mary's 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

17

Trucking employees

95

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

Freight corridors near Leonardtown

Leonardtown sits on MD-2, MD-231, MD-235, MD-246, MD-4 and MD-5. 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).