Rolling stock
Rolling stock is the collective term that describes all the vehicles that move on a railway. It usually includes both powered and unpowered vehicles, for example locomotives, railroad cars, coaches and wagons[1][2][3][4]. The term is sometimes used to refer only to non-powered vehicles, specifically excluding locomotives[5].
The term contrasts with fixed stock (infrastructure), which is a collective term for the track, signals, stations and buildings etc. necessary to operate a railway.
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