What is required during reverse movements within the same signaled block?

During reverse movements within the same signaled block, no permission is needed because such movements are typically considered routine and are regulated by the signal indications already provided. When a train is operating within a signaled block, the signals themselves provide guidance on the movement's safety, allowing for reverse movements without additional permissions as long as the actions remain within the parameters established by the signaling system.

The signaling system ensures that any potential hazards or conflicts are managed effectively, so the operational protocols allow crews to reverse without needing to obtain further explicit authorization. This is a common practice that helps maintain efficiency in operations while still adhering to safety protocols established by the railway.