What permission is required for reverse movement if a train stops within manual interlocking limits?

When a train stops within manual interlocking limits, the appropriate action for reverse movement requires permission from the control operator. This is due to the safety protocols established in railroad operations that ensure proper communication and coordination when trains are maneuvered in reverse within areas where manual interlocking is in place.

The control operator is responsible for the management and oversight of the signals and track switches in these interlocking limits, making their authorization crucial for any movements in reverse. This process helps prevent potential conflicts with other trains and maintains safe operations within the network.

In contrast, permission from a train engineer or dispatcher alone would not suffice because they may not have the necessary real-time situational awareness or control over the signals and tracks as the control operator does in this scenario. Additionally, no permission being required would pose a risk to safety, as movements in such critical areas need to be closely monitored and coordinated.