Clean Truck Check Credentialed Tester

Clean Truck Check in Allentown, PA

1 credentialed tester in Allentown.

Testers in Allentown

Nearest in-person tester to Allentown

The closest CARB-credentialed Clean Truck Check tester is Thomas Myers in Zieglerville, Pennsylvania — about 22 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Lehigh 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
280
Trucking employees
2,540

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

Freight corridors near Allentown

Allentown sits on I-476, I-78, US-22, US-222, PA-100 and PA-145. 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 Allentown. Useful for routing a service stop around your CTC test.

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