What is the minimum number of lanterns that a subway track flagman should carry?

A subway track flagman is responsible for ensuring safety on the tracks, particularly in situations where train operations need to be controlled due to potential hazards. The regulations typically require a minimum number of lanterns to provide adequate visibility and communication of signals, especially in low-light conditions or emergencies.

Carrying at least two lanterns ensures that the flagman can convey signals effectively. One lantern can be used for signaling trains coming from one direction, while the other can be utilized for trains approaching from the opposite direction. This redundancy is critical in maintaining safety and allows the flagman to be prepared for various scenarios, thus ensuring clear visibility and communication to train operators.

If a flagman were to carry only one lantern, they risk being unable to signal effectively to approaching trains from both directions, which could lead to dangerous situations. The requirements for three or more lanterns may pertain to additional considerations, such as specific operational procedures or larger sections of track needing coverage, but the minimum standard is at least two for proper functionality and safety.