The problem I see with it is that the sound doesn't have the "emergency" feeling to it. We are trained to hear piercing noises as danger, not white noise.<br><br>Plus, it sounds more like things in the environment, meaning it's not just for the trucks. I might think it's just a walkie talkie or radio.,(reply>), @Miles From Extraordinary I'm no audiologist, but I'm guessing we can hear "red" shift in higher frequencies easier than lower. Sure, by then it could be too late, but where the sound is isn't nearly as important as is it moving toward me.<br><br>And by "red shift" my dumb ass means Doppler effect...,(reply>), @ZipplyZane i thought their goal was to make it so that you could find the truck that is going to crush you. just a tiny indicator tone to make it clear that it's not releasing brake pressure would be good. just mess with the frequencies a little until it's clear that something isn't braking instead,(reply>), @Orion Hunter I think their goal is to get rid of the beep, because they find it annoying. Since the other sound can work at lower volumes, it would be less noticeable. <br><br>I just don't think it will work well because a lot of things sound like white noise. Plus how many of us wear headphones or have our phones suddenly make noise?,(reply>), @Miles From Extraordinary you've clearly never worked on a job site. That white noise sound is almost exactly like a sound from a plasma cutter, which is quite common on job sites. Once you've been arc flashed a few times, you learn to instinctively look <b>AWAY</b> from that noise, and you certainly don't look towards it. If you stopped work and looked towards the sound of every walkie talkie when it made a squelch sound, you'd also get no work done. <br><b><i>This was done entirely to appease people that live in overpriced houses and apartments in London. It decreases safety, not increases it.</i></b>,(reply>), why can't they just have both, like a zhzhzhzhzhzhhzhzhhz