210-33
Chances are, you’ve heard of the police code 10-4, which means “affirmative” or an acknowledgment of a message. But if you hear a police officer say 10-33, there’s a police emergency underway. However, the meaning of various “10 codes” (10-1, 10-2, 10-3, etc.) differ between police departments. Here are 10 more emergency phrases you should know before you travel.
