What is the best course of action if a train passes a signal but is unsure of its authority?

When a train passes a signal and the operator is uncertain about their authority to proceed, the most appropriate action is to notify the dispatcher for instructions. This step is critical because the dispatcher has the authority and comprehensive information regarding the train's position, the status of signals, and the overall network conditions.

By communicating with the dispatcher, the operator can clarify whether they have permission to continue or if they need to take other precautions, such as reverting to a previous signal or stopping the train completely. This ensures safety and compliance with operational protocols, preventing potential accidents or rule violations. The dispatcher can provide guidance based on real-time data, which is essential for making safe operational decisions.

Engaging with the dispatcher also helps maintain a clear line of communication, which is vital in rail operations to ensure that all parties are aware of the train's status and any issues that may arise. This prevents confusion and enhances overall safety on the railway.