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:

    “Anyone who tries to keep track of what is happening in China is going to end up by wearing all the skin of his left ear from twirling around on it.”
    —Robert Benchley (1889–1945)

    “each new victim treads unfalteringly
    The never altered circuit of his fate,
    Bringing twelve peers as witness
    Both to his starry rise and starry fall.”
    —Robert Graves (1895–1985)