What is a Signal, Hand?

What is a Signal, Hand?

• A. A signal given by the motion or position of a person's hand, arm, flag or light.
• B. A signal that uses a mechanical arm on the track.
• C. A purple flag signaling crew change.
• D. A train whistle signal.

Answer: (A)

Hand signals are direct visual instructions given to the train operator by a person using their hand, arm, a flag, or a handheld light. This type of signal is used for clear, immediate communication when the operator needs guidance in close quarters, in yards, or when other systems aren’t being used. The best choice captures exactly that idea—the signal is conveyed by the motion or position of a person’s hand, arm, flag, or light. The other options describe different signaling methods: a mechanical arm on the track is a trackside mechanical signal, not a hand signal; a purple flag for crew changes is a specific operation signal, not the general hand signal; and a train whistle signal is an audible signal, not a hand signal.

Hand signals are direct visual instructions given to the train operator by a person using their hand, arm, a flag, or a handheld light. This type of signal is used for clear, immediate communication when the operator needs guidance in close quarters, in yards, or when other systems aren’t being used. The best choice captures exactly that idea—the signal is conveyed by the motion or position of a person’s hand, arm, flag, or light.

The other options describe different signaling methods: a mechanical arm on the track is a trackside mechanical signal, not a hand signal; a purple flag for crew changes is a specific operation signal, not the general hand signal; and a train whistle signal is an audible signal, not a hand signal.