What does a 'restricted speed' signal indicate?

A 'restricted speed' signal requires that trains proceed at a speed that allows them to stop within half the distance of their sighting. This means that when a train encounters such a signal, the engineer must reduce speed significantly to maintain safety, particularly in situations where there may be an obstruction, another train, or any other hazard on or near the track. This precaution helps ensure that the engineer has ample reaction time to safely stop the train if needed. The principle behind this rule is to prioritize safety, allowing for adequate stopping distance based on the visibility of the track ahead.

In rail operations, understanding the implications of speed signals, particularly restricted speed, is critical for maintaining safe and efficient train movement.