With train command as the core, the signalling system is deeply integrated with the vehicle system, communication system, PSD system, ISCS system, PIS system, etc., to achieve multi-professional automatic linkage and improve the overall automation level of the rail transit operation system. On the basis of the existing equipment, the protection function of passengers and operators is strengthened by increasing the redundancy configuration of equipment, and the linkage function of various systems in emergency situations is strengthened to improve the safety and reliability of the system in an all-round way. Strengthen the central control function, realize the full automatic train operation monitoring, system equipment monitoring and maintenance and passenger-oriented remote service. Through the cross-line and common line interconnection operation of trains, resource sharing and line operation capacity are improved, and the cost of rail transit construction and operation and maintenance is minimized.