Which term best describes the signaling equipment that provides both audible and visual cues?

• A. Automatic Warning Devices
• B. Aux. Lights
• C. Audible and Visual
• D. Emergency

Answer: (C)

The main idea here is recognizing a term that explicitly denotes signaling using both sound and sight. The phrase that best fits is the one that literally describes signaling with both audible and visual cues. Audible cues include sounds like horns or bells, while visual cues are lights or signals. So describing the signaling equipment as “Audible and Visual” directly communicates that it provides information through both senses, which is exactly what the question asks for.

Automatic Warning Devices are a broader category of warning systems and can include either audible or visual components depending on the setup, so they aren’t as precise about delivering both modalities. Aux. Lights refer only to lights, which are purely visual. Emergency is a general term and doesn’t specify the signaling modality at all.