In APCO 10-codes, 10-39 refers to "Urgent use lights and siren."
This code is used by law enforcement officers to indicate that they are responding to a situation that requires immediate attention and that they will be activating their emergency lights and siren. This signals to other drivers and pedestrians that the officer needs to navigate through traffic quickly to reach the scene of an incident or emergency.
For example:
- Officer: "Dispatch, I am responding to a reported robbery in progress, 10-39."
- Dispatcher: "Copy that, Officer. Use caution and advise if backup is needed."
Using 10-39 helps ensure that all units are aware of the urgency of the situation and can respond accordingly, maintaining public safety while facilitating a rapid response.