Ok, I get that motorcyclists must be constantly vigilant around other motorists, on account of latter constantly trying to kill the former. What I didn't expect was for the streets themselves to get into the act. It's the whole, "crashed through the barrier" thing that has me puzzled. Was the driver not paying attention? Barriers incorrectly marked? Was he or she driven into them by a motorist? If so, that would be a pretty classic bank shot, no?