Really??  I would have guessed the exact opposite.<br>If I hadn't just watched 100 or so Tom Scott videos in a row I would question the accuracy of this video.<br><br>"White noise" is drowned out, that's literally what the phrase "white noise" has come to mean: a noise that gets ignored in the background.<br>Not to mention that it can easily be confused with other background noises, like depressurisation or hydraulics.<br>I hadn't even noticed that those sounds were coming from the trucks.<br>Beeping is much harder to ignore, and much easier to notice.<br><br>I fully expected the reason for the change to be that it's less obnoxious to people nearby.