Ah countries that actually make progress on stuff. I really wish they'd do something about the beepers on construction vehicles in the US, it's probably the most significant and annoying source of noise on construction sites. I would imagine it's probably not all that effective either, as people who have worked on construction sites for years where that noise is constant probably 100% tune it out. Not so sure about this "white noise" thing, sounds like air brakes releasing, another common sound in that context. Solution I see, an actual modern solution, is backup cameras on every machine so the driver can actually see if there's someone in their way. Though for that matter, a lot of construction machines with rear-located cabs and big implements on the front (a lot of front end loaders and forklifts) look as though they actually have much better visibility behind than forward, yet still have reverse beepers.