Provided (generally in areas controlled by CBIA generic term for a second generation processor based system for controlling the Interlocking between Points and Signals, as well as communication with linesid... More) to replace all Signals to
DangerAn indication given by a Signal to stop. More in an area controlled by an interlockingA general term applied to the setting and releasing of Signals and Points to prevent unsafe conditions arising; also the equipment which performs this function.... More, either:
• in response to a traffic emergency, or
• where the interlockingA general term applied to the setting and releasing of Signals and Points to prevent unsafe conditions arising; also the equipment which performs this function.... More fails to respond to commands.