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:

    “Commit a crime and the world is made of glass. Commit a crime, and it seems as if a coat of snow fell on the ground, such as reveals in the woods the track of every partridge and fox and squirrel and mole.”
    —Ralph Waldo Emerson (1803–1882)

    “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)