How should a train operator respond to a yellow caution sign and lights on the track?

When a train operator encounters a yellow caution sign and lights on the track, it indicates a warning regarding a potential hazard or the need for reduced speed. The appropriate response is to proceed at restricted speed with extreme caution. This involves reducing speed as necessary to stop within the available distance, ensuring a thorough assessment of the situation ahead.

By operating at restricted speed, the train operator maintains the ability to react to unexpected conditions on the tracks, such as obstructions or changes in signaling. This cautious approach prioritizes safety and prepares the operator to respond effectively to any emerging hazards.

In contrast, accelerating to normal speed would not account for the warning provided by the caution signs, potentially putting the train and crew at risk. Emergency braking would be too abrupt unless a clear danger was immediately visible. Signaling for an approach stop may not be warranted unless specifically directed by the signaling system or situation, and it may not address the need for cautious movement in an uncertain environment.