If a locomotive is not coupled to the rail equipment, what must a crew member do before going between?

Before a crew member goes between a locomotive and the rail equipment it is not coupled to, it is crucial that they notify all crew members via radio. This communication ensures that everyone on the crew is aware of the crew member's intentions and can take the necessary cautionary measures. Effective communication is vital for safety in rail operations, particularly when personnel are working in close proximity to moving or potentially hazardous equipment.

Establishing clear communication allows the engineer and other crew members to monitor the situation, ensure that the area is clear, and prevent any accidental movements of the locomotive or rail equipment that could lead to accidents or injuries. It represents a fundamental practice within the railway industry to maintain safety and situational awareness among all crew members when performing tasks that involve potential dangers.