| Code | Meaning |
|---|---|
| “Situation under control” | The situation is resolved or stabilized. |
| “All units” | Alerting all available units to a situation. |
| “10-4” | Message received and understood (influenced by international radio codes). |
| “Urgent” | The situation requires immediate attention. |
| “ETA” | Estimated time of arrival. |
| “Backup” | Request for additional police units. |
| “Negative” | No or disagreement. |
| “Affirmative” | Yes or acknowledgment. |