What must be done when engines are working at both ends of a track?

When engines are working at both ends of a track, it is crucial for crews to have a clear understanding of movements. This is essential to ensure safety and coordination. The presence of active engines at both ends presents a higher risk for miscommunication, which could lead to potentially dangerous situations, such as collisions or derailments.

Clear communication helps in planning the sequence of movements and coordinating actions between crews. This also allows for effective management of any switching operations, ensuring that all personnel are aware of their positions and the movements of the engines involved. This understanding plays a critical role in maintaining operational efficiency and safety in rail operations. Proper communication protocols are vital in preventing confusion and ensuring that all crew members are aligned on their tasks and movements.