Police Radio Codes
Quick Answer
Learn common police radio codes, 10 codes, signal codes, and public-safety communication terms.
- Topic: Police
- Best use: fast reference, learning, and clear communication.
- Updated: 2025-08-11
Police radio codes vary by agency, but many departments use 10 codes, signal codes, and plain-language terms for dispatch communication.
Important Note
Code meanings are not universal. A code that means one thing in one county may mean something different in another.
Police Radio Codes
| Code | Common Meaning |
|---|---|
| 10-4 | Acknowledged |
| 10-7 | Out of service |
| 10-8 | In service |
| 10-9 | Repeat |
| 10-20 | Location |
| 10-33 | Emergency traffic |
| Code 3 | Emergency response with lights and siren |
| Code 4 | No further assistance needed |
| Signal 100 | Hold radio traffic |
| BOLO | Be on the lookout |