That's interesting. After watching the video I realized that yes the white noise style of backup sound is fairly common on trucks here in the US but never thoug

That's interesting. After watching the video I realized that yes the white noise style of backup sound is fairly common on trucks here in the US but never thought about why. Actually, now that I think about it the local garbage trucks use it. You definitely know where the sound is coming from, and it's loud and it gets your attention. For the last several years I've been living in Mexico, after living in Seattle for many years, and I'm still struck by how much quieter it is here. Playing of loud music is actually far more common here, especially at night, and jake braking is a thing too but none of it's annoying. There's no noise ordinances that I know of. Even still the noise level is generally far lower than even a quiet day back in the States. Right now it's Sunday afternoon and man it feels like a quiet Sunday afternoon. No complaints.