Track Circuit

A track circuit is a safety system used in railways to detect whether a section of track is occupied by a train. It works by using electrical signals: when a train is on the track, it completes a circuit, signaling to the control system that the section is occupied. When the train leaves, the circuit is broken, indicating the section is clear. This helps prevent collisions by allowing signaling systems to automatically control train movements, ensuring safe and efficient operation on the railway network.