Clean Truck Check Testers in Maine

Trucking activity in Maine

FMCSA MCMIS reports 5,700 active motor carriers registered with operations in Maine. The Clean Truck Check program reaches the heavy-duty subset that operates in California, which is why this directory exists.

Interstate carriers

3,900

Intrastate carriers

1,800

Hazmat carriers

320

Passenger carriers

140

Heavy-duty power units

18,700

Medium-duty power units

3,700

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