What should be the immediate response to an ATC failure indication?

The immediate response to an ATC (Automatic Train Control) failure indication should be to inform the trainmaster, as this is crucial for ensuring proper and coordinated action following the failure. The trainmaster is responsible for overseeing train operations and safety within the area and must be alerted to issues that could affect operations or safety.

Informing the trainmaster allows them to assess the situation, allocate additional resources if needed, communicate with other personnel, and implement any necessary contingency plans to mitigate risks. This proactive approach is vital in maintaining safety and efficiency on the train network.

While manual overrides, safety inspections, and activating emergency protocols may be necessary steps that follow or are part of the overall response plan, notifying the trainmaster is the immediate priority to ensure an organized and systematic approach to handling the ATC failure. This step aligns with the protocol of maintaining clear communication in safety-related incidents, allowing for prompt and effective management.