What does Code 1000 signify?

• A. A routine maintenance notification
• B. An emergency
• C. A radio status update
• D. All clear

Answer: (B)

Understanding radio codes: numeric codes convey how urgent a situation is. Code 1000 is used to signal an emergency that demands immediate response from units and dispatch. It shifts radio traffic to priority, prompting responders to act quickly, often with lights and sirens, to address a dangerous or time‑sensitive situation. The other options describe routine maintenance, a standard status update, or an all‑clear, none of which carry the same urgent meaning. Remember that code definitions can vary by agency, so always rely on your department’s official code list.