Clean Truck Check in Johnson City, TN

Nearest in-person tester to Johnson City

The closest CARB-credentialed Clean Truck Check tester is corey jones in Church Hill, Tennessee — about 24 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Washington 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

40

Trucking employees

241

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

Freight corridors near Johnson City

Johnson City sits on I-26, I-81, I-81-Alt, US-11E, US-19 and US-19E. 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 Johnson City. Useful for routing a service stop around your CTC test.

• Black Diamond Travel Center
  ~9 mi
  View on OpenStreetMap →

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