What CB Radio Codes Mean
Quick Answer
Learn common CB radio 10 codes and what they mean for road, trucker, and emergency communication.
- Topic: Radio Communication
- Best use: fast reference, learning, and clear communication.
- Updated: 2025-08-11
CB radio codes shorten common phrases so drivers and operators can communicate quickly. The best-known code is 10-4, meaning message received.
Use Plain Language When Needed
Not every region uses codes the same way. If a message is important, say it clearly in plain language after using a code.
Common CB Radio 10 Codes
| Code | Meaning |
|---|---|
| 10-1 | Receiving poorly |
| 10-4 | Message received |
| 10-7 | Out of service |
| 10-8 | In service |
| 10-9 | Repeat message |
| 10-20 | Location |
| 10-33 | Emergency traffic |
| 10-36 | Correct time |
| 10-42 | Traffic accident |
| 10-100 | Restroom break |