One-Third of Headlights Don't Work Well: Safety Group

Headlights on a third of U.S. midsize car models do a poor job, according to results released Wednesday from the Insurance Institute for Highway Safety, Reuters reported.

This was the first time the group rated vehicle headlights. It tested midsize cars to see how well they illuminate the road and if they create excessive glare for oncoming vehicles.

Eleven out of 21 models tested earned an acceptable rating, while 10 were poor. Nine were rated marginal. Only one — the Toyota Prius v — performed well enough to earn a good rating.