Earlier quoted context omitted.
> … and those driving around them take greater risks too Really? Data shows that a driver will subconsciously take stock of the fact that a cyclist is wearing a helmet and adjust their risk assessments accordingly? I find that incredibly difficult to believe.
This seems to be a good article on this: https://www.theguardian.com/lifeandstyle/2017/mar/21/bike-he... “ In 2006 he attached a computer and an electronic distance gauge to his bike and recorded data from 2,500 drivers who overtook him on the roads. Half the time he wore a bike helmet and half the time he was bare-headed. The results showed motorists tended to pass him more closely when he had the helmet on, coming…
> Walker said he believed this was likely to be connected to cycling being relatively rare in the UK, and drivers thus forming preconceived ideas about cyclists based on what they wore. “This may lead drivers to believe cyclists with helmets are more serious, experienced and predictable than those without,” he wrote.
The article also mentions this risk-taking study where some participants were asked to gamble and some had helmets on and some had hats on, and found that people with helmets on took greater risks. If I were asked to do something like wear a helmet where one is completely unwarranted, I might feel silly and do silly things for that extra fun factor. Wearing a helmet on a bike results in a completely different mindset than wearing a helmet at the office, if not solely for the fact that it's unusual behavior.