Clean Truck Check Credentialed Tester

Clean Truck Check Testers in Oregon

26 CARB-credentialed testers across 12 cities.

Cities with credentialed testers

Testers in Oregon

All cities & towns in Oregon

Trucking activity in Oregon

FMCSA MCMIS reports 17,800 active motor carriers registered with operations in Oregon. The Clean Truck Check program reaches the heavy-duty subset that operates in California, which is why this directory exists.

Interstate carriers
12,700
Intrastate carriers
5,100
Hazmat carriers
1,080
Passenger carriers
400
Heavy-duty power units
57,400
Medium-duty power units
11,200

Source: FMCSA MCMIS Registration Statistics. Snapshot 2024-10-01. Last fetched 2026-05-18.