Why Do Reversing Trucks Not Beep Any More?

Tom Scott stands by a construction site and explains why reversing vehicles now use a white-noise hiss instead of beeping. The sound is easier to locate directionally and less annoying to neighbours.

HN 推荐的原因： Cited whenever backup beepers and noise come up, as a clear explanation of the white-noise alternative.

“Tom Scott has a fascinating video that describes how this is changing” 阅读 HN 讨论 ↗