Okay I'm new here, and currently don't wear a helmet. I also ride a motorcycle, and when I do it's ATGATT (All The Gear All The Time), but when I'm riding my bike I'm not wearing any gear.

I'm just wondering what stats show for bicycle collisions. From what I've read about motorcycle accidents, in most crashes where the head hits the pavement the chin hits first. Meaning a half helmet is basically useless in the majority of accidents.

But bicycle helmets only cover the top of the head, so how does it help exactly? Or should I just be riding my bike in full leathers and a full face helmet? Just asking, ... I mean any accidents that I've had on a bicycle were at such a slow speed that i was able to land on my feet.