Oakland Police Department 900 Radio Codes Practice Test 2026 - Free Radio Codes Practice Questions and Study Guide

Radio code 921 means a car prowler or clouter. This code signals that a person is attempting to break into or has been rummaging through vehicles, often by smashing a window, so responding units know to move quickly to the area and be on the lookout for the suspect. It’s a specific alert that distinguishes this situation from other calls or routine instructions. The other options describe different scenarios or instructions and do not match the meaning of 921.