The next time you hop on a bicycle to head across town, consider this: your helmet may not perform well enough in an accident.
A first-of-its-kind study using the latest techniques for simulating head injuries found significant variations in how bike helmets protect against concussions.
Urban-style helmets — which have nearly solid covers with few vents — and those that haven’t adopted the latest anti-concussion technology were more than twice as likely to result in injuries, researchers from Virginia Tech and the Insurance Institute for Highway Safety found in a study released Tuesday.