Using restricted speed, a train or equipment must be able to:

The requirement to stop within half the range of vision is a critical safety measure in train operations, particularly when trains are operating at restricted speed. This ensures that the crew has sufficient time to react to any obstructions or hazards on the track, allowing for a safe stop without colliding. Restricted speed is typically employed in areas where visibility may be limited or where workers are present, necessitating a heightened awareness and reaction capability from the train crew.

In scenarios where restricted speed is enforced, maintaining the ability to stop within this distance effectively safeguards the crew, equipment, and any personnel on or near the tracks. This vigilant approach minimizes risk and supports the overarching goal of safety in railway operations, especially where roadway workers may be present.