Probably referring to the study in the uk to examine how overtaking distances of passing vehicles is affected by the attire of the cyclist [1]. There's suggest

Probably referring to the study in the uk to examine how overtaking distances of passing vehicles is affected by the attire of the cyclist [1]. There's suggestions that making helmets compulsory reduces cyclists, which in turn makes cycling unsafer. I cycle in London every day (for the past 10 years) and personally don't wear a helmet (though plenty of my friends do). I tried, but found for me it was a mild occasional obstruction to my peripheral vision - something I value highly on the road. [1] http://news.bbc.co.uk/1/hi/england/somerset/5334208.stm http://news.bbc.co.uk/1/hi/england/somerset/5334208.stm