A third rail, also known as a conductor rail, electric rail, live rail, or power rail, is a method of providing electric power to a railway locomotive or train, through a semi-continuous rigid conductor placed alongside or between the rails of a railway track. It is used typically in a mass transit or rapid transit system, which has alignments in its own corridors, fully or almost fully segregated from the outside environment.
A third rail, also known as a conductor rail, electric rail, live rail, or power rail, is a method of providing electric power to a railway locomotive or train, through a semi-continuous rigid conductor placed alongside or between the rails of a railway track. It is used typically in a mass transit or rapid transit system, which has alignments in its own corridors, fully or almost fully segregated from the outside environment.
Source: Wikipedia "Third rail" · CC BY-SA 4.0
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