If the person giving the signal to shove a train disappears, what must employees do?

When the person giving the signal to shove a train disappears, the proper course of action for employees is to stop movement unless controlled by the leading car. This is essential for maintaining safety on the railroad. The disappearance of the signaler indicates a potential loss of communication and could imply an unexpected situation that might require the train to halt.

Stopping the movement ensures that employees can assess the situation and avoid any potential hazards. In this case, the leading car may remain under control, but it is critical to ensure that the entire operation is secure before proceeding. Safety protocols emphasize that clear communication and confirmation of signals are vital, and the disappearance of a signaler means those conditions are no longer met, necessitating a halt to movement until further instructions are received.

In this scenario, continuing movement with caution or signaling for movement from a distance could lead to unsafe situations, as those options don't address the uncertainty introduced by the disappearance of the signaler.