Car alarms are electronic security warnings designed to draw attention when a vehicle detects possible interference. Their repeating, high-volume patterns became familiar through parking lots, street scenes, films, television, games, and online videos. Short alarm clips are now commonly used as editing cues rather than continuous background audio. Creators use them to signal theft, panic, accidental activation, or sudden trouble involving a vehicle. The sound remains effective because viewers recognize its meaning almost instantly, even when only a brief section is heard.