What should a train do if it is delayed in block in CTC or manual interlocking limits?

In situations where a train is delayed in block within Centralized Traffic Control (CTC) or manual interlocking limits, the appropriate action is to proceed prepared to stop at the next signal until it is visible and displays a proceed indication. This course of action ensures that the train is operating under caution, which is essential when signals are not immediately visible or when there may be potential hazards ahead.

The requirement to proceed prepared to stop allows the train crew to remain vigilant and ready to respond to any changes in signal indications or unexpected track conditions. It emphasizes the importance of safety and awareness of the train's surroundings, especially in busy rail corridors where other trains may be operating.

Choosing this response reflects adherence to the protocols that prioritize safety, as it minimizes the risks associated with running a train at full speed without knowledge of upcoming signals or conditions. Understanding this procedure is crucial for maintaining safe operations in various rail control environments.