What must be done if a train reports a loud noise or unusual ride?

When a train reports a loud noise or unusual ride, it is crucial to prioritize safety in the vicinity of the reported issue. By protecting the location and limiting speed in the area, potential hazards can be mitigated, which helps prevent accidents or further complications. This approach allows for careful monitoring of the situation, ensuring the safety of crew members, passengers, and the infrastructure.

Taking immediate action by reducing speed helps ensure that any problems can be addressed swiftly, minimizing risks associated with the train's condition. This proactive response prepares for further investigation while still maintaining some level of operations without exposing additional trains to potential danger. It is a precautionary measure that ensures that if there is a serious issue, it is less likely to escalate into an accident.