What is a Signal Indication?

What is a Signal Indication?

• A. The material used to apply paint on signals.
• B. The operating information conveyed by the aspect of a signal. Proceed, approaching next signal prepared to stop.
• C. A maintenance check of the track.
• D. The battery level of the signaling system.

Answer: (B)

Signal indication is the operating information shown by a signal’s aspect that tells the train operator what action to take. It’s the message the signal conveys—such as proceed, proceed with caution, or stop—and, in some systems, an instruction like approaching the next signal prepared to stop. The signal itself is the hardware, but the indication is the instruction for the train. The other options describe physical aspects (paint material), a routine maintenance check, or battery status, none of which tell the operator what to do at or beyond the signal.

Signal indication is the operating information shown by a signal’s aspect that tells the train operator what action to take. It’s the message the signal conveys—such as proceed, proceed with caution, or stop—and, in some systems, an instruction like approaching the next signal prepared to stop. The signal itself is the hardware, but the indication is the instruction for the train. The other options describe physical aspects (paint material), a routine maintenance check, or battery status, none of which tell the operator what to do at or beyond the signal.