Was riding my non-studded tire bike one dark morning last spring and hit some black ice around a corner. If there's a benefit to going down fast, it's that I didn't have time to stick my hands out to attempt to break my fall, which is probably what saved me from a broken collarbone. People say you go down faster on black ice, but until you experience it first hand you really don't realize how fast that is.When I hit the ground I still had both hands on the bars and both feet on the pedals. Seriously, by the time I figured out something was wrong I was already sliding on the ice. There was absolutely no time to react.

One nice thing is I slid smoothly to a stop and didn't rip my brand new jacket. Had a good sized bruise on my upper arm though, and I'm really glad I had a helmet on because my head hit the ground and I slid on it for a few yards.

I hate riding my studded tires. My winter bike is painfully slow and extremely tiring to ride. But it's better than hitting the ground.

Somebody tell these guys to develop a black ice sensor:

Riding A Bike At Night Just Got Easier With This New Device That Prevents Painful Spills - Dose - Your Daily Dose of Amazing