In radio codes, Code 3 indicates which situation?

• A. All clear; no further assistance needed.
• B. Traffic congestion.
• C. Emergency response with lights and siren.
• D. Request for backup.

Answer: (C)

Code 3 signals an urgent, emergency response with lights and siren. It’s used when immediate action is required to reach a scene quickly, such as a high-risk situation or a medical or violent incident where time matters. This code tells responders to prioritize the call and proceed at once, using lights and sirens as needed.

The other scenarios don’t match this level of urgency. “All clear; no further assistance needed” describes a resolved situation, not an active emergency. “Traffic congestion” is a status condition or obstacle, not an urgent response instruction. “Request for backup” is a separate communication that indicates help is needed, but it isn’t automatically the urgent, lights-and-sirens priority that Code 3 conveys.