The IIHS has introduced a new headlight rating program to evaluate headlights and improve safety. Their motivation is that over 16,000 crashes occur annually in dark conditions and better headlights could help reduce these. Their tests evaluate headlights on curves and straightaways to measure visibility and glare. In their first release rating 31 vehicles, they found most headlights performed poorly. Future plans include rating more vehicle types to help consumers identify vehicles with better headlights.