interlocking

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English[edit]

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Verb[edit]

interlocking

  1. present participle of interlock

Noun[edit]

interlocking (plural interlockings)

  1. (rail transport) An arrangement of signal apparatus that prevents conflicting movements through a set of tracks such as junctions or crossings.
    • 1961 March, “Talking of trains: Collision at Waterloo”, in Trains Illustrated, page 138:
      In addition to the usual interlocking between conflicting signal and point levers achieved by electric locks, track circuits, when occupied, hold signals governing entry to the relevant line at danger; [...] The up main through inner home signal was held at danger by interlocking, because the track circuits of a conflicting route ahead of it were occupied by another train [...].

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