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Clean Truck Check in Janesville, WI
1 credentialed tester in Janesville.
Testers in Janesville
Nearest in-person tester to Janesville
The closest CARB-credentialed Clean Truck Check tester is Woodstock Truck and Trailer Repair in Woodstock, Illinois — about 39 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.
Trucking activity in Rock 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
136
Trucking employees
2,153
Source: FMCSA MCMIS carrier census, US Census County Business Patterns 2021.
Freight corridors near Janesville
Janesville sits on I-39, I-39-ALT, I-43, I-90, I-90-ALT and US-14. 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 Janesville. Useful for routing a service stop around your CTC test.
- Petro Stopping CentersPetro · HGV: yes · ~3 mi
- PilotPilot · HGV: yes · ~11 mi
- Pilot Travel CenterPilot · HGV: yes · ~11 mi
- Flying J Travel Center16049 Willowbrook Road, South Beloit, IL 61080Flying J · HGV: yes · ~13 mi
- Flying J16049 Willow Brook Road, South Beloit, IL 61080Flying J · HGV: yes · ~13 mi
- Road Ranger6070 Gardner Street, South Beloit, IL 61080Road Ranger · HGV: yes · ~13 mi
- Road Ranger6070 Gardner Street, South Beloit, IL 61080Road Ranger · HGV: yes · ~13 mi
- Love's Travel StopLove's · ~16 mi
+8 more within 25 miles.
Source: © OpenStreetMap contributors. Last updated 2026-05-26.