What does the Stop and Stay function apply to stop the train?

The Stop and Stay function is specifically designed to facilitate a controlled stopping of the train and maintaining that position on the tracks after coming to a stop. This is achieved through a service brake application.

A service brake application allows for a gradual and controlled reduction of speed, ensuring that the train can stop at a designated location safely. It also allows the engineer or operator to ascertain the condition of the train and the track before moving again, which is an essential component of safe operations.

An emergency brake application, while effective for stopping the train quickly, is typically reserved for critical situations and is not part of the routine Stop and Stay protocol. Similarly, manual brake applications may not provide the reliability or consistency needed for the Stop and Stay function, and a full brake application goes beyond what is necessary for a controlled stop in this context.

Thus, the service brake application is the optimal choice to align with the intent and function of the Stop and Stay mechanism in train operation.