What is the role of signals in railway systems?

Signals play a crucial role in railway systems primarily by conveying information that governs train movement. They inform train operators about whether it is safe to proceed, the speed limits they should maintain, and the status of upcoming signals. This ensures that trains can operate safely and efficiently, preventing collisions and allowing for the smooth flow of traffic on the tracks.

While maintenance schedules, track conditions, and speed control are important aspects of railway operations, they are typically handled through other systems or procedures rather than through the signals themselves. Signals are specifically designed to provide real-time instructions to train crews, which is fundamental to maintaining safety in railway environments.