 These accidents happen during my morning commute, and they always happen when it rains. I have this very light bicycle I got, and when it rains, something about this bike on the city streets, a metal grate, a slippery patch of any sort at all, can make the bike slip out from under me. I've broken a clavicle. I banged up my wrist. I've given myself some kind of bruise on my right arm that still wakes me up at night months later.