Of course they do. They discourage people riding bicycles and thus help people avoid concussion.
More seriously the people who ride bicycles on streets with cars are much braver than me. I have been lucky in life and seen few examples of serious accidents, but of those I have experienced first hand around 25% have involved people who were riding bicycles.
More seriously the people who ride bicycles on streets with cars are much braver than me. I have been lucky in life and seen few examples of serious accidents, but of those I have experienced first hand around 25% have involved people who were riding bicycles.