Clean Truck Check Credentialed Tester

Clean Truck Check Testers in Oregon

25 CARB-credentialed testers across 12 cities.

Cities with credentialed testers

Testers 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.