A new helmet law reduces bicycle deaths among the affected age group by about 19%. It doesn't affect older riders. Since serious bicycle accidents are rare, however, the absolute numbers are still small, about eight fewer deaths a year among kids 5 to 15 than would otherwise occur in the states with helmet laws. "It's not a ton of lives when you compare it to something like wearing your seat belt," says Prof. Stehr.
One reason for the drop is, of course, that more kids wear helmets when they get into accidents. But another is that many give up cycling altogether. Using surveys of parents, the professors find that about 650,000 fewer children ride bikes each year after helmet laws go into effect. That's about 81,000 fewer riders for every life saved. Helmets may save lives, but the dork factor also takes its toll.
Tuesday, October 12, 2010
From the Wall Street Journal: