What must happen when an engineer operates a train from other than the leading end of the movement?

When an engineer operates a train from other than the leading end of the movement, the crew must take proper action to control movement. This is essential for safety and operational effectiveness since the dynamics of the train change when it is being operated from a non-leading position. The engineer must be aware of the visibility constraints and potential handling characteristics that differ when the locomotive is not at the front.

Proper actions may include closely monitoring the equipment, maintaining communication with the crew, and ensuring that all safety protocols are followed. This proactive approach ensures that any change in the train's handling or response to controls is adequately managed, thus preventing accidents or unsafe situations.

Maintaining control is crucial, as any failure to effectively manage the train's movement could lead to safety hazards for both the crew and surrounding environments. Therefore, the requirement for the crew to take proper action reflects the importance of management and safety protocols when operating a train from a position other than the leading end.