What is the consequence of pulling the service brake application if the flashing mode indication is not touched within the allotted time?

Pulling the service brake application while the flashing mode indication is active triggers an immediate response to ensure safety. If the indication is not acknowledged within the designated time frame, the consequence is that the train will automatically stop moving. This is a safety safeguard designed to prevent potential accidents or issues that could arise from inaction in a critical situation, thereby ensuring the safety of both the train and its passengers.

The responsibility of monitoring and responding to indications, like flashing lights, falls on the operating crew. In scenarios where the situation requires attention, failure to respond within the allotted time necessitates an automatic reaction, which in this case is the application of the service brakes to bring the train to a halt. This automatic stopping mechanism underscores the importance of timely responses to operational alerts, maintaining safety standards on the train.