Track Circuit

A track circuit is a simple electrical device used to detect the absence of a train on rail tracks, used to inform signallers and control relevant signals.

Read more about Track Circuit:  Principles and Operation, Transmission of Status, Siding Turnout, Track Circuit Clips, History

Famous quotes containing the words track and/or circuit:

    “Away went the messenger’s bicycle,
    His serpent’s track went up the hill forever.
    And all the time she stood there hot as fever
    And cold as any icicle.”
    —John Crowe Ransom (1888–1974)

    “The Father and His angelic hierarchy
    That made the magnitude and glory there
    Stood in the circuit of a needle’s eye.”
    —William Butler Yeats (1865–1939)