What must a train communicate to the dispatcher when requesting Stop Release Function permission?

When a train is requesting Stop Release Function permission, it is essential for the dispatcher to know both the track and the direction of the train. This information is critical as it allows the dispatcher to assess the situation accurately and make informed decisions regarding the safe operation of the train.

Understanding the track is vital because it determines the available routes and any potential hazards on those tracks. Knowing the direction of the train helps the dispatcher monitor its movement and confirm that it aligns with overall train operations and schedules. This is particularly important when determining clearances on the rail network or coordinating with other trains to prevent collisions.

In contrast, only providing the train’s speed or destination lacks key operational context. Speed alone does not inform the dispatcher about the situation on the tracks or how to manage the train's journey safely. Similarly, knowing just the destination misses crucial details about how to navigate routes and potential conflicts with other rail traffic, which could lead to unsafe conditions. Thus, conveying both track details and the direction ensures effective communication between the train and dispatcher, facilitating safe and efficient train operation.