What does the code 10-12 signify?

The code 10-12 signifies "Standby," which is used in law enforcement communications to indicate that an officer or dispatcher should wait for further instructions or information before taking action. This code is crucial in ensuring that all personnel are aware that a situation requires attention but that immediate action should not be taken.

Using "Standby" can facilitate coordination among units, allowing personnel to focus on gathering necessary information or planning a response effectively. This can help prevent confusion and overlap in communications, especially during incidents that may evolve quickly.

In contrast, the other options represent different scenarios that are not applicable to the code. For example, "Message delivered" does not denote a need to wait and does not specifically connect to the operations of officers in the field. "Weather/road conditions" and "Domestic problem" also stand for distinct types of dispatch information and scenarios, rather than the directive to standby for further instructions, which is the essence of the ten-codes system's efficiency in communication.