During shoving movements, who must acknowledge all radio communications from the conductor?

• A. The engineer
• B. The conductor
• C. The brakeman
• D. The dispatcher

Answer: (B)

The main idea is clear communication discipline during shoving moves. The engineer in the locomotive cab must acknowledge every radio instruction from the conductor. This explicit acknowledgment confirms that the instruction was heard and understood before any movement starts or continues, which is crucial when you’re backing a shove or maneuvering in tight spaces.

Acknowledgment keeps everyone aligned: the conductor is coordinating the move on the ground, and the engineer’s confirmation signals that the plan is understood and can be carried out safely. If the engineer doesn’t acknowledge, it can lead to confusion, unexpected movement, or unsafe situations for crew and track personnel. So, the responsibility to acknowledge lies with the engineer, ensuring the conductor’s instructions are properly received and acted upon.