How many people were killed on bicycles in DC last year? Zero.
Absolutely none at all. Did you hear me? None!
Now go outside and count how many bicycles you see, and do the math.

Pedestrians make up 27% of all traffic fatalities in DC. Looks to Me like it's the drivers and pedestrians who need helmets - not the cyclists!

How many people were killed in cars last year...? Have we lost count?

Studies have shown that motorists drive much more aggressively around cyclists who wear helmets, and that the reduction in injuries (most minor) since helmets were promoted is directly proportional to the number of people who gave up cycling because they were told it was too dangerous. What's actually more dangerous is driving cars, and not getting enough exercise, due to irrational fears.

The only risk to cyclists is cars - and that risk is present no matter if you are walking on the crosswalk, driving in another car, or whatever. The benefit of the bicycle is that unlike pedestrians, your are more visible and move with the flow of traffic. Also, unlike cars, the bicycle poses almost no risk to anyone. In fact, the risks to your health are higher if you don't cycle, than if you do - helmet or no helmet.

- Lee