The Track SectionA portion of railway track having fixed boundaries and for which the Train Detection System provides information on its state of occupancy to the Signalling Sys... is clearA Colour Light Signal that is displaying a Proceed Aspect or a Semaphore Signal in the Off position. of any train on a Track CircuitAn electrical device using the rails in an electric circuit, which detects the absence of trains on a defined section of line. or a section is
clearA Colour Light Signal that is displaying a Proceed Aspect or a Semaphore Signal in the Off position. of axles.