The characteristics of the traditional signaling system

Traditional railroad signaling system is composed of various types of signal display, track circuit, turnout rutting device, such as the main equipment and other relevant ancillary facilities constitute a complete signal, interlocking, blocking system. In the line referred to as letter, joint, closed system. The main role is: to convey, instruct the train operation order, provide train operation information, feedback train operation real-time trajectory, as well as indicate a particular signal warning. It is necessary to include ground fixed signals, locomotive signals and all kinds of signal signs and other signaling facilities. In order to collect the real-time status of train operation, express the occupation of the rail line, check the actual state of track performance.