What does the Brake Pipe Mode Selector switch control?

The Brake Pipe Mode Selector switch is an essential component in rail systems, particularly in trains equipped with advanced braking systems. Its primary function is to control how the brake pipe interacts with the Brake Control Unit (BCU). By adjusting the mode, the operator can determine whether the brake system operates in a conventional manner or utilizes electronic control, allowing for more efficient management of braking forces.

When the Brake Pipe Mode Selector is set to a specific mode, it informs the BCU how to interpret the pressure signals from the brake pipe. This control is crucial for ensuring proper synchronization between the train's braking system and the operational requirements during various scenarios, such as normal operations or emergencies. Thus, choosing this option highlights the centrality of the Brake Pipe Mode Selector in facilitating effective communication and functionality between the brake pipe and the BCU.