I can’t tell you how much I hate these fucking things. They’re ungodly loud, too. At least once a year, one of the drivers gets killed, but it doesn’t discourage the rest.
And it’s not just the city. When I lived in the Hellmouth, my apartment building backed up onto a park and the dirt bikers would go right alongside my apartment and into the woods. I called the police all the time (because they’re illegal on public property), but they never did a thing. The fact that I took a picture of one wearing a Hellmouth police department jacket might have something to do with it.

700-800 annual deaths nation-wide. But of course it doesn’t discourage the others. They’re immortal.