Train DetectionThe proof of the position of the Points (Normal or Reverse) to the Interlocking equipment. More equipment using the rails in an electric circuit, which detects
the presence of a train (as opposed to its absence). See Track CircuitAn electrical device using the rails in an electric circuit, which detects the absence of trains on a defined section of line. More,
Overlay Track CircuitA Track Circuit that operates within, and additionally to, another track circuit. Normally used for detecting the passage of a train at or past a specific posit... More.