Well, they don't exist in my neighborhood, on the cul de sac that I live on. I suspect most neighborhoods don't have teenagers terrorizing random culdesacs at any appreciable level.

Yea, I almost spit out my beer reading that. We have people who deliberately race down our suburban road to the cul-de-sac, slam on the brakes to make as much noise as they can, do a few burnouts there, and then race back, for no reason other than to be belligerent and antisocial. Not teenagers, either. Grown-ass men do this for the lulz.

Also Delivery drivers, lost drivers, maintenance workers, mail man, etc