What is general railway signal?

A general railway signal is a system used to regulate the movement of trains on a railway track. It consists of a network of signaling devices such as lights, flags, and mechanical devices that provide information on the status of the track and the movement of trains. The purpose of the signal system is to prevent collisions and ensure the safety of trains, passengers, and railway staff.

The general railway signal system is divided into two categories: fixed signals and train order signals. Fixed signals are located at fixed points along the track and provide information about the status of the track ahead. The most common types of fixed signals are red, green, and yellow lights. Train order signals are used to communicate with train crews and provide information about the track ahead. These signals are used when there is an obstruction on the track or when there is a change in track conditions.

The general railway signal system also includes a system of interlocking devices that control the movement of trains at junctions, switches, and crossings. Interlocking devices ensure that trains cannot enter conflicting routes and prevent collisions.

In modern railway systems, signal systems are controlled by computerized systems that can track the movement of trains and provide real-time information to train crews and control centers. This has significantly improved safety and efficiency in railway operations.