During a traffic stop, which code is used?

• A. Code 3
• B. Code 7
• C. Code 9
• D. Code 5

Answer: (D)

Radio codes are used to convey specific operations quickly and without exposing details. A traffic stop is a defined operation that benefits from a concise, unambiguous signal on the radio. When units are stopping a vehicle, calling in the traffic-stop code alerts dispatch and nearby units that the stop is in progress, prompts any required response (such as backup or equipment readiness), and helps keep radios clear for essential information. Because this code is dedicated to that scenario, it is the clearest and most reliable way to communicate the situation and coordinate actions, which is why that option is the best choice. Other codes point to different situations—emergencies, status changes, or other non-traffic-stop activities—so they would not communicate the same situation as efficiently.