Train Control System is a communication-based signaling system overlaid on an existing signal system. This was designed to prevent train collisions and overspeed derailments.
The main function of the system is to enforce signal authorities, civil speed limits and temporary speed limits. It was designed as a vital overlay to an existing CTC system with a wireless computer network of servers These servers communicated with the equipped locomotives through the communication system consisting .
With this scheme, the communication to a number of locomotives can be conducted with more ease. Most of the decision-making processes are made with the host processors on-board the locomotives. Train tracking system is based on GPS (Global Position System.)All the messages are delivered properly and accurately, and will continuously perform surveillance of all devices and interfaces of the system to ensure they are in proper working conditions, and if not, a fail-safe fall back will be enforced.
Another feature that is critical to high-speed operation is the advanced grade crossing activation. When the train approaches a crossing, continuous location tracking and calculation are performed and will activate the crossing gates using wireless communication, instead of the conventional track circuit, at the appropriate time to insure the optimum advanced activation time.