This is why I hate the street sweepers in LA. In any other city, street sweepers leave a wet trail like a slug. In LA, they are basically a dry broom that kicks up dust. They are designed to pick up trash from the gutter, not clean the road of particulates and oils like in other cities.
I used to live down in Oxnard and they’d literally have industrial sized blowers on a trailer and just blow the dirt in the road towards houses. Of course I happened to have all my windows opened when they came but once. But at least the road is clean?