What does a block signal govern?

A block signal governs the entry and usage of trains in a block. This is critical for ensuring safe and efficient train movements within designated segments of track, known as blocks. Each block is a section of track that can only accommodate a certain number of trains depending on signal indications.

When a block signal displays a proceed indication, it allows trains to enter that block safely. Conversely, if it shows a stop indication, it prevents trains from entering, thereby maintaining safe distances between trains and preventing collisions. The effective management of train movements through block signals helps to prevent accidents and ensures that trains operate in a safe and orderly manner across the rail network.