The following codes may be used by law enforcement officers to communicate effectively over voice radio systems.
| Code | Meaning |
|---|---|
| Code Red | VARDA alarm activated |
| Code Purple | Gang activity |
| Code Blue | Bus/Cab in trouble |
| Code 666 | Country-wide emergency |
| Code 100 | In position to intercept suspect |
| Code 43 | TAC forces committed |
| Code 37 | Subject/Property wanted |
| Code 33 | Clear radio channel – emergency traffic only |
| Code 30 | Officer needs emergency assistance |
| Code 22 | Restricted radio traffic |
| Code 21 | Jail emergency |
| Code 20 | Notify news media to respond |
| Code 14 | Resume normal operation |
| Code 13 | Major disaster activation |
| Code 10 | Bomb threat / Patrol your district and report extent of damage |
| Code 9 | Roadblock |
| Code 8 | Fire alarm |
| Code 7 | Out of service to eat |
| Code 6 | Out of vehicle for investigation |
| Code 5 | Stakeout – uniformed officers stay away |
| Code 4 | No further assistance required |
| Code 3 | Emergency – Proceed immediately with lights and siren |
| Code 2 | Urgent – Proceed immediately |
| Code 1 | Non-urgent situation |