Three times and never my fault. First time two pedestrians popped out into the street mid block and I hit them going about 15mph or so. Totaled the bike and I had headache (concussion) and really sore neck (whiplash) for 5 days. They walked away laughing when I said I was calling the police. Second time I was hit by a bike while walking across the college campus that I work at. Over two months for my ribs to stop hurting. Last time women stopped at the end of her drive (turning in) and I saw all clear and then she turned in front of me. Over the hand bars and onto the hood. Bruised legs and arms and another trashed bike. She was looking for the garage door opener when she stopped and had not seen me until she had turned across my lane.
I feel very lucky to have not had any permanent damage. After the two incidents where I was on the bike, I was psychologically shaken for at least a couple of months.