What does restricted speed imply for trains approaching the emergency location?

Restricted speed implies that trains should proceed with caution when approaching an emergency location. This means that the train must be able to stop within half the distance to the next signal or visible obstruction, and it must also be prepared to respond to any unexpected issues that may arise.

The principle behind restricted speed is to prioritize safety by allowing the train crew to react to any hazards or situations that may require immediate action. This includes being vigilant about track conditions, possible obstructions, or encountering other personnel or equipment on the tracks. It emphasizes the importance of maintaining a lower speed to facilitate the necessary caution when navigating areas where there may be emergencies or other safety concerns.

In contrast, other options suggest actions that do not align with safety protocols during emergencies, such as abruptly stopping or increasing speed, which could lead to dangerous situations.