My experience living in a relatively quiet area has been that the loudest vehicles, by far, are garbage trucks followed by other kinds of trucks. But it is much

My experience living in a relatively quiet area has been that the loudest vehicles, by far, are garbage trucks followed by other kinds of trucks. But it is much harder to do something about that because they serve an economic purpose and it would presumably be very expensive to make them quieter. It's a lot easier to blame people with gratuitously loud cars and motorcycles because they don't have a real excuse, even if they have less of an impact in absolute terms.