The information conveyed by the aspect of a signal is called what?

• A. Signification
• B. Indication
• C. Interpretation
• D. Signal Level

Answer: (B)

In railroad signaling, the information conveyed by a signal’s aspect is called the indication. The aspect is the visible display (lights or semaphore) that tells the train crew what action is allowed or required, and the term “indication” names that specific message. It’s the precise label for what the signal communicates at a glance. General terms like signification describe meaning more broadly, interpretation is the act of understanding, and signal level isn’t the term used for the message the signal shows. For example, a red indication means stop, a green indication means proceed, with other colors or patterns indicating different instructions.