Train detection refers to the technology and methods used to identify the presence and location of trains on a railway track. This is crucial for ensuring safety and efficient train operations. Various systems, such as track circuits, axle counters, and GPS, are employed to monitor train movements and prevent collisions. These detection systems work by sending signals or using sensors to determine if a train is on a specific section of track. When a train is detected, the information is relayed to control centers, allowing operators to manage train schedules and maintain safe distances between trains, enhancing overall railway safety.