I saw my first bike accident last night.
It was a lot warmer on the way home- I was actually hot in all my gear from the morning.
I got passed on the Longfellow bridge by someone who I first thought was a woman wearing a skirt and opaque tights. I was thinking that would have been super cold in the morning!
When I pulled up at the light, I realized that it was a guy wearing wool cycling knickers and wool kneesocks. He was running a double Schmidt E6 lighting system and we chatted about it briefly.
A couple of blocks later, I had just looked over my shoulder before moving further over into the lane. When I looked back ahead, the guy was hitting the pavement ahead of me. By the time I caught up to him he was getting up. I tried to shine my lights to help him pick up pieces of one of his E6s. He thought he had hit a pothole and although he thought his tire had blown, it seemed to be OK. A very nice driver (with a dual roof rack) stopped to ask if he was OK and if he needed a ride, which he declined.
This guy was doing everything right- riding conservatively, stopping at lights, running a good lighting system. It just shows that anyone could do it- and to me it's sure a good argument for wearing a helmet, which he was.