What is the responsibility of the engineer when a MAL bar indicates caution?

When a MAL (Monitoring and Alerting Logic) bar indicates caution, it serves as an important signal that the engineer must take seriously. The primary responsibility of the engineer in such a situation is to prepare for a potential stop. This caution indicator implies that there may be an anomaly or issue detected in the system that could affect safety or operation.

By preparing for a potential stop, the engineer is taking proactive measures to ensure not only their own safety but also the safety of passengers and equipment. This preparation might involve assessing the situation, communicating with the control center, or gradually reducing speed as a precaution.

Other options, such as maintaining current speed or switching to manual control, do not adequately account for the implications of the caution signal. The engineer’s priority should always focus on safety, making it essential to prepare for contingencies outlined by the caution indication. Adjusting operational strategies in response to such alerts is a critical aspect of the engineer's responsibilities, ensuring readiness for any developments that may arise from the caution indication.