I wonder if it would be better to have a alternating beep-fshhhh. The beep is familiar and lets you know a vehicle is reversing. But the white noise is better for accuracy.<br><br>So instead of<br>fshhh..... fshhh... fshhh... or<br>Beep... Beep... Beep...<br><br>It would be<br>BeeFshhhBeeFshhhBeeFshhh<br>In a constant alternating loop.,(reply>), I think knowing something is reversing in general vicinity is more important than hearing a weird sound you are unfamiliar with and knowing exactly where it's coming from. You are not supposed to walk close to heavy equipment and 100% not when you are not looking at it. Also if a truck or crane "surprised" you and you have to use ears instead of eyes to find it, maybe change jobs. And the supervisor(s) did a bad job and put life of co-workers in danger.