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railroad trackclick to hear

A pair of parallel rails laid end to end and on which trains run.
railroad track ballast rail tie

ballast click to hear

Bed of gravel that serves as the foundation for the tracks and provides drainage.

rail click to hear

Steel bar of a set gauge that is attached to ties; the train’s wheels roll along it.

tie click to hear

Piece of wood or concrete that is set in ballast and supports the rails to distribute the train’s load and keep the rails parallel.