One of the things that makes cyclists safer is having more other cyclists on the road. I'm happy to wear my helmet, but if others don't, I just want them on the

One of the things that makes cyclists safer is having more other cyclists on the road. I'm happy to wear my helmet, but if others don't, I just want them on the road. In aggregate, we'll all be safer, even though some will choose not to wear helmets. Specifically: Even those that choose not to wear helmets will be safer due to the increase in ridership. The comparison to seat-belts isn't appropriate because my not wearing a seat-belt in a car accident increases risk for others (specifically others in the same car as me). There is also fairly conflicted evidence that helmets are effective. There is a fairly narrow treatment range where they work well. Be hit by something going faster or slower than that range, and they don't matter much. They are nothing like full-face motorcycle helmets. There is also evidence (although not well replicated?) that drivers treat helmeted cyclists worse than unhelmeted ones.