Which statement correctly describes Code 4 at a scene?

• A. Code 3 denotes emergency response with lights and siren.
• B. Code 2 denotes a status check.
• C. All clear; no further assistance needed.
• D. Code 4 denotes traffic control.

Answer: (C)

In on-scene radio communications, codes quickly convey the current status of an incident. Code 4 means all clear and no further assistance is needed—the scene is secure and units can stand down or return to duty. This is why the statement describing all clear fits best: it directly reflects that status. Other options describe different conditions—emergency response with lights and siren relates to a more urgent Code 3, and a status check describes Code 2—so they don’t apply to Code 4. The notion of traffic control is a task at the scene, not what Code 4 conveys.