> the use of helmets may alter the perceptions of drivers opposite to what you suggest I think both can be true: 1. "cyclists are better protected, so less ne

> the use of helmets may alter the perceptions of drivers opposite to what you suggest I think both can be true: 1. "cyclists are better protected, so less need to be careful" 2. "cyclists are engaging in something dangerous and unusual because they need to wear a helmet". I looked at this a few years ago, and I found most studies on the topic inconclusive, some studies with contradicting results, etc. so in general I'm a bit hesitant citing studies on the topic.