Headlights; require motorist to use in adverse driving conditions due to adverse weather or other conditions.

HB 450 requires all drivers in Mississippi to use headlights during adverse weather (like rain, snow, fog, or ice) or other conditions that reduce visibility and necessitate windshield wiper use. It specifically prohibits using only parking lights when headlights are required, defining "adverse driving conditions" to include precipitation requiring wipers, unexpected road hazards, or low-visibility situations. Violations carry a $25 misdemeanor fine, and the law takes effect July 1, 2026. This bill directly affects all vehicle operators on Mississippi roads during specified hazardous conditions.