Clean Truck Check Credentialed Tester

Clean Truck Check in Waterloo, IA

1 credentialed tester in Waterloo.

Testers in Waterloo

Nearest in-person tester to Waterloo

The closest CARB-credentialed Clean Truck Check tester is Jacob Poole in Cedar Rapids, Iowa — about 51 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Black Hawk 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
80
Trucking employees
1,117

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

Freight corridors near Waterloo

Waterloo sits on I-380, US-20, US-218, US-63, CR-D22 and CR-V49. 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 Waterloo. Useful for routing a service stop around your CTC test.

+1 more within 25 miles.

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