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:
“I know what you’re thinking. Did he fire six shots or only five? Well, to tell you the truth, in all this excitement I’ve kinda lost track myself. But being this is a .44 Magnum, the most powerful handgun in the world, and would blow your head clean off—you’ve got to ask yourself one question: Do I feel lucky? Well, do ya, punk?”
—Harry Fink, U.S. screenwriter, Rita Fink, U.S. screenwriter, Dean Riesner, U.S. screenwriter, and Don Siegel. Harry Callahan (Clint Eastwood)
“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)