via Insurance Institute of Highway Safety
Tom Vanderbilt, author of Traffic, pointed out in his blog this map of bicycle helmet laws from the Insurance Institute of Highway Safety. I thought it was interesting because I didn't know that most states have no helmet law whatsoever. You have to wonder how the states came up with the different ages - from 11 in Pennsylvania to 17 in New Mexico and California. Is it based on crash incidence and severity, or, more likely, just a committee of legislators playing pick a number?
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