For safety on the highways, "buckle up" may no longer be sound advice in every situation. When the National Transportation Safety Board began an investigation in 1984 on seat-belt performance, a surprising pattern emerged: backseat passengers who had used lap belts suffered more serious and fatal injuries in head-on collisions than did those with no restraints at all. The NTSB has called on the Department of Transportation to require shoulder harnesses in the backseats of new cars, a regulation that could take effect by the end of the year.
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