Yep, while out yesterday I saw a group approaching an intersection with four way stop. The first three riders in the group started to slow down. This was good because cars are notorious for doing a rolling stop at this intersection. The fourth rider, a young woman in her 20's didn't slow down and was going to blow through the intersection. At the last minute she noticed a car doing the rolling stop thing, and quickly swerved to her right running full tilt into a chain link fence. While she hit a spot between two posts that had some give, the impact knocked her off the bike and she and the bike were shot back toward the direction from which they came. (It actually looked like something you might see in a cartoon.) She jumped up, had a trickle of blood running down her leg (chain ring tattoo), was shaken up, but otherwise seemed fine. After checking to see if I could offer assistance I started to pedal away and heard her say, "I guess 'Stop' really does mean stop." I can't make up my mind if she was a quick learner or a slow learner.