What does the code 10-4 typically stand for?

The code 10-4 is widely recognized within law enforcement and emergency services as meaning "Affirmative." This designation is used to indicate that a message has been received and understood clearly. It’s a form of acknowledgment that is crucial for effective communication in high-pressure situations. When officers use this code, they streamline their communication, reducing confusion during radio transmissions. This brevity is essential in law enforcement, allowing for quick exchanges of critical information without unnecessary elaboration. Understanding this code ensures that all personnel are on the same page and can coordinate their efforts efficiently.