What is required for a train to safely leave a station according to station restrictions?

For a train to safely leave a station, it is essential for it to fully clear the platform. This requirement is critical to ensure the safety of passengers and train operations. Clearing the platform minimizes the risk of accidents, such as passengers inadvertently stepping onto the track as the train departs.

When a train is fully clear of the platform, it confirms that it has moved beyond the area where passengers may be boarding or disembarking. This ensures that all individuals are at a safe distance from the moving train, thereby reducing the likelihood of injuries.

In the context of train operations, "clearing the platform" means reaching a point where the train is no longer in the vicinity of loading and unloading areas, allowing for a safe departure. Other factors, while important in operating procedures, do not directly ensure the safety of leaving the station in the same manner as clearing the platform does.