Commuter regional rails are passenger rail systems including regional and commuter rail, metro systems, light rail, streetcars and trams.
A freight train or cargo train hauled by one or more locomotives on a railway transporting cargo or materials as part of the supply chain.
Long-distance express passenger trains that cover longer distances than commuter trains. Amtrak is the sole intercity passenger rail service in the United States.
Switching and terminal trains perform local switching services in a rail yard or terminal facility.