Clean Truck Check in Herndon, VA

Nearest in-person tester to Herndon

The closest CARB-credentialed Clean Truck Check tester is MEJIA'S TRANSPORT LLC in Frederick, Maryland — about 29 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Fairfax 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

199

Trucking employees

1,924

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

Freight corridors near Herndon

Herndon sits on I-270, I-270-Spur, I-370, I-495, I-66 and US-15. 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 Herndon. Useful for routing a service stop around your CTC test.

• Flower Valley Loading Dock area
  ~18 mi
  View on OpenStreetMap →

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