The end of daylight saving time is deadly for deer, and the number of deer getting hit on America’s highways jumps by 16% the week after clocks are moved back an hour, leaving more people driving in the twilight and dark.

That’s according to a study published in Current Biology .

“Based on 1,012,465 deer-vehicle collisions and 96 million hourly traffic observations across the United States, we show that collisions are 14 times more frequent two hours after sunset than before sunset, highlighting the importance of traffic during dark hours as a key determinant of deer-vehicle collision risk," according the authors’ summary of the study.

“Year-round daylight saving” would prevent roughly 33 human deaths, 2,054 human injuries, 36,550 deer deaths, and save about $1.2 billion in vehicle d

See Full Page