In the case of seeing two yellow lanterns suspended one above the other on the right side of the track, what action should be taken?

When encountering two yellow lanterns suspended one above the other on the right side of the track, the situation indicates a warning of potential hazards or workers present on or near the tracks. In this context, the presence of yellow lanterns is a signal for train operators to take precautions.

The correct action in this scenario is to bring the train under control and sound a warning to alert any employees working nearby. This approach ensures both the safety of the crew and any workers on the track, allowing for necessary precautions to be taken in the vicinity of potential dangers or disruptions.

Resuming normal operation as indicated by fixed signals would not be appropriate in this case, as the yellow lanterns serve as an alert to possible risks. Similarly, stopping the train could pose its own risks and is not the directed response to the presence of these warning signals. Although proceeding cautiously to the next flagman may seem practical, it does not adequately address the need to alert workers, which is essential for maintaining safety on the tracks. Thus, bringing the train under control and sounding a warning is the correct, safety-oriented action in this scenario.