If a train is notified of a crossing malfunction but cannot contact the flagger at the crossing, how will the train proceed?

When a train is notified of a crossing malfunction and cannot contact the flagger at the crossing, the appropriate course of action is to stop and provide a warning until the head end of the train occupies the crossing. This response is crucial for safety reasons.

Stopping allows the crew to assess the situation more thoroughly and ensures that the train does not enter a potentially hazardous crossing where vehicles or pedestrians could be present. By providing warning, either through horn signals or radio communication, the crew can alert any nearby motorists or pedestrians of the train's presence and the issue at the crossing. This approach minimizes the risk of accidents and adheres to safety protocols designed to protect both train operations and the public.

The decision to stop also reflects adherence to rules that prioritize safety over momentum, especially in scenarios where malfunctioning equipment could lead to unforeseen hazards. Thus, this option ensures that all necessary precautions are taken before proceeding in a situation that is not fully under control.