As a matter of fact, I was attacked on a public road while jogging. Having anticipated the possibility of such an attack, I was prepared and destroyed the animal with lethal force.
Two of my neighbors were very nearly killed by pit bulls. One of them was able to get inside his car and close the door which saved his life. The other required the dog to be put down with several .40 cal rounds in the living room where the attack took place.
Ultimately, the endless pro-pitbull propaganda doesn't add up to a pile of dogshit because biology is destiny and these animals continue to be the #1 breed responsible for attacks and the damage done from said attacks is quite often severe. The breed can't change its genetically embedded instincts (the idea that "training" can accomplish this is just nuts) so it is destined to be treated like the biological weapon that it is.
Note to persons who have been attacked by pit bulls: If you survive the attack, get immediate medical help and document everything possible, including photos with both the wound and your face in the picture. Contact your attorney and file a civil suit against the owner. If they have homeowners insurance, the insurance company will almost certainly look for a quick settlement. Consider it a public service, as higher insurance rates will surely reduce the attractiveness of these uncontrollable and deadly animals to dog owners.