Clean Truck Check Testers in Montana

Trucking activity in Montana

FMCSA MCMIS reports 6,800 active motor carriers registered with operations in Montana. The Clean Truck Check program reaches the heavy-duty subset that operates in California, which is why this directory exists.

Interstate carriers

4,400

Intrastate carriers

2,400

Hazmat carriers

420

Passenger carriers

120

Heavy-duty power units

23,200

Medium-duty power units

4,300

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