importantSYS.SOURCE: nycsubway.org• 2026-07-20T15:00:31Z

NYC Subway Wayside Color-Light Block Signaling System Overview

#railway signaling #track circuits #train safety

The article explains the NYC subway's wayside color-light block signaling system, which uses track circuits and control lengths to detect train presence and enforce safe separation. It details automatic train stops, interlocking systems, and the gradual adoption of modern in-cab signaling technologies on select lines.

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