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:

    “What is the use of going right over the old track again? There is an adder in the path which your own feet have worn. You must make tracks into the Unknown.”
    —Henry David Thoreau (1817–1862)

    “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)