A Track CircuitAn electrical device using the rails in an electric circuit, which detects the absence of trains on a defined section of line. More not in the direct line of a SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed. More routeThe path along a section of track between one Signal and the next, along which an authorised movement is to be made. More with one of its
extremities within the required Clearance PointThe minimum distance from Points and Crossings at which Track Section boundaries must be positioned, to prove that a vehicle on one track is in a position clear... More.