Building an active safety barrier through multi-level acoustic alerts—from basic operation reminders (such as seatbelt or door status), to dynamic environmental awareness (like reverse radar or pedestrian warnings), and critical system fault alerts (including oil pressure or brake issues). The core value lies in transforming abstract system risks into intuitive, audible signals. As intelligent driving continues to evolve, buzzers are increasingly integrated with multiple sensors. For example, Tesla synchronizes buzzer frequency with camera data to enhance situational awareness. Looking ahead, buzzers will further develop into scene-adaptive smart acoustic interfaces, playing a key role in safer and more intelligent human-machine interaction within next-generation vehicles.