I cannot open the study in the first link but the second on seems to actually refute the claim instead of supporting it. > There is a body of research on how d

I cannot open the study in the first link but the second on seems to actually refute the claim instead of supporting it. > There is a body of research on how driver behaviour might change in response to bicyclists’ appearance. In 2007, Walker published a study suggesting motorists drove closer on average when passing a bicyclist if the rider wore a helmet, potentially increasing the risk of a collision. Olivier and Walter re-analysed the same data in 2013 and claimed helmet wearing was not associated with close vehicle passing.