What must trains be prepared to do when approaching interlocking signals?

When approaching interlocking signals, trains must be prepared to stop. This is essential because interlocking signals govern the movement of trains through junctions, ensuring safety and preventing collisions. The stop signal indicates to the train crew that they need to halt their progress, either because the signal is red, or because it is necessary to clear the track ahead for another train.

Trains may encounter various situations at interlocking points, such as signals changing due to traffic management or the need to wait for switching operations. Therefore, being prepared to stop allows for the appropriate response to any directions conveyed by the signal, maintaining the integrity of train operations.

In this context, accelerating, continuing at the same speed, or switching tracks without an explicit indication or command from the signal could lead to dangerous situations, such as collisions or derailments. Stopping at signals is fundamental to ensuring the safe and organized operation of railway systems. Being prepared to stop enables the train crew to respond to the rules and instructions set by the signal system effectively.