In what situation is a readiness report typically required over the radio?

A readiness report is essential before train movements as it provides crucial information about the status of the train, its crew, and any relevant safety factors that need to be communicated before proceeding. This report ensures that all involved parties are aware of the train's readiness to operate, including any potential issues that could affect performance or safety.

In situations where equipment maintenance is occurring, communication is focused on the maintenance itself, not on readiness for movement. Similarly, during breaks and at the end of shifts, the focus shifts away from operational readiness, as the train is not in motion and does not require immediate readiness assessment. Thus, the requirement for a readiness report is specifically aligned with the operational protocols that prioritize safety and communication before any movements of the train occur.