These MUPs are dangerous for everyone--the little kid who does not know the right from the left, the long leash dogs, the loose dogs, joggers plugged in their music, people who chats in the middle of it, large groups who are in the mob mentality and take the all width and my favorite are the cyclists running a leashed dog along. . . until a rabbit comes along!!! You also have the nasty one who are fed up with the world and the cyclists by walking their leashed dog on one side and he is walking on the other side!
The worst of it all is that I have to use them here or there and I live by one of them in order to start some of my rides!