here were 3,661 rider deaths in fatal motorcycle crashes. An effectiveness of 37 percent for motorcycle helmets suggests that an estimated 1,158 additional motorcyclists would have died were it not for the fact that they were wearing helmets
here were 3,661 rider deaths in fatal motorcyclecrashes. An effectiveness of 37 percent for motorcyclehelmets suggests that an estimated 1,158 additionalmotorcyclists would have died were it not for the fact thatthey were wearing helmets