What does it mean for a train to be "under full control"?

Being "under full control" for a train refers specifically to the ability of the operator to manage the train's speed and stopping distance effectively. This involves ensuring that the train can stop smoothly within the range of vision, which is crucial for safety. It means that the operator is aware of their surroundings and can respond appropriately to any obstacles or changes in track conditions. Being able to stop smoothly indicates that the operator is not only in command of the train but is also adhering to safety protocols that protect passengers, workers, and equipment.

This concept emphasizes the importance of situational awareness and the ability to respond to various conditions while in motion. It encompasses the idea that an operator must be prepared for any situation that could arise within a visible distance, which is critical in maintaining safety standards on the railway.