Good IIHS headlight ratings linked to lower crash rates
The headlight ratings program developed by the Insurance Institute for Highway Safety is reducing dangerous nighttime crashes in the real world, a recent study shows.
Nighttime crash rates per mile are nearly 20 percent lower for vehicles with headlights that earn a good rating in the IIHS evaluation, compared with those with poor-rated headlights, the study found. For vehicles with acceptable or marginal headlights, crash rates are 15 percent and 10 percent lower than for those with poor ratings.