Wait, really? I've not heard this before &gt;_&gt;  I need to get out more.,(reply>), I live in mainland Europe and never heard it either (or did, but assumed it was air release from a compressor or broken walkie-talkie). To me this white noise sound is unsafe. Maybe safer in laboratory setting, but not irl.,(reply>), +herranton1979 Cobblers. I'm sure there'd have been reports on the dangers of white noise beeping if people were being run over because of that, but it hasn't happened here in the UK at all.,(reply>), +a flock of sea-cows, esquire Me too.,(reply>), @James Bond There are significantly more trucks in the US than in the UK. It would be a nightmare to change, plus people are hardwired to listen for the beeping and correlate it with danger, whereas the new noise doesn't have the same psychological effect. we are conditioned to look for danger when you hear beeping, white noise would just be a novelty for awhile, and people wouldn't get it right away. It would take multiple deaths before people would equate the white noise with danger. <br><br><br>There are loads of examples like this in society. Right now, I am typing on a qwerty keyboard. The Dvorak keyboard is better in every way, except that it would be a nightmare to change, so we don't. Good for the UK for changing, but is certainly wasn't needed.,(reply>), @Manatee McKenzie Nor me and I work on a carpark one day a week haha.