I'm sorry but this is absolute bullshit in my opinion. The white noise just sounds like pressurized air. I had worked around trucks a few times in my life and if I heard a "shhhh" sound I wouldn't even move because what do I know, someone might pressurize/depressurize the air tank, change the driving level or even something not even related to a truck on the construction site. But as soon as the beeping starts you quickly look around if you are in danger of getting hit. Really there is no other sound a truck makes which is even remotely close to beeping. But a white noise? Many things sound like a "shhhh" on a construction site.,(reply>), Having heard one of these in real life, you definitely notice it more than the beeps.,(reply>), TheTornado121 well any noise is bs. Look and don't stand where your at ridk of getting run over.,(reply>), I would prabably be better if it was a white sawtooth wave,(reply>), TheTornado121 Beep and white noise, why not both?,(reply>), TheTornado121 I’ll take your untested anecdotal recollection that only recognizes one of the variables in this comparison to years of engineering and research any day!