In APCO 10-codes, 10-5 means "Relay Message."
This code is used when someone is asking for a message or information to be relayed to another party. For example, if a dispatcher needs to pass along a message to another officer or unit, they would use 10-5:
- Dispatch: "Unit 7, 10-5 this message to Unit 3: Respond to the backup request at Elm Street."
In this context, 10-5 helps ensure the efficient passing of messages or instructions between individuals or teams.