What must employees specify when directing movement through radio communication?

When directing movement through radio communication, it is important for employees to specify the distance to be traveled. This specification ensures that all parties involved have a clear understanding of how far the movement is intended to go, which is critical for safety and operational efficiency. Knowing the distance allows supervisors, train operators, and anyone else involved in the operation to coordinate their actions and prevent potential conflicts or dangerous situations.

By providing the distance, the employees can ensure that any necessary precautions are taken regarding signaling, switch positioning, and the readiness of crew members along the route. The explicit communication of distance also helps in planning for stops, reductions in speed, and interactions with other trains or trackside activities, contributing to an overall safer work environment.

While aspects such as the name of the person responding, the specific action being performed, and the speed of movement are important for general communication rigor, the distance is a crucial piece of information that directly influences the execution of the movement itself. Thus, it is essential for safety and coordination in operations.