What is the next action if the train operator is alerted to a track obstruction?

When alerted to a track obstruction, the train operator's immediate and most appropriate action is to stop the train. This response is critical for ensuring the safety of both the train crew and passengers, as well as preventing possible damage to the train and tracks. Stopping the train allows for an assessment of the situation, including evaluating the nature of the obstruction and determining the best course of action to address it.

Proceeding at normal speed would pose a significant risk, as it could lead to a collision with the obstruction. Similarly, performing a safety check, while important, is not the immediate priority when an obstruction is detected; stopping the train takes precedence to avoid any potential accidents. Announcing to passengers is also less urgent compared to stopping the train; while communication is important, ensuring the train is halted safely comes first to protect everyone involved.