Is rolling equipment allowed to pass a blue signal on a protected track?

In the context of rail operations, a blue signal is an important safety measure used to indicate that work is being performed on or near the track, and it signifies that no movement should occur on that section of the track. This signal is critical in ensuring the safety of workers and equipment on the tracks.

When a blue signal is displayed, it means that a crew is actively engaged in tasks that could pose risks if rolling equipment were to move through that area. Therefore, the rules governing train movement in proximity to blue signals are strictly enforced; rolling equipment must not pass a blue signal that is protecting an area. This prohibition helps to prevent accidents that could arise from work crews being unaware of approaching trains or equipment.

While there may be specific scenarios where exceptions or additional conditions apply (as suggested by the other choices), the fundamental rule is that rolling equipment is not permitted to pass a blue signal unless proper authorization is clearly communicated, which typically involves notifying the crew and ensuring safety protocols are strictly followed. This rule is crucial to maintain operational safety and protect the lives of workers on the tracks.