Wildlife crossings over (and under) the highways could make animals (both wild and domesticated) and people safer.

Our expanding network of roads are interrupting and fragmenting the territories of wild (and also domesticated) animals who need to cross our roads in search of food, water, mates, and shelter. Many are routinely struck and killed by vehicles in this most basic quest for survival.

In addition to conservation concerns, animal-vehicle collisions have a significant cost for human populations because collisions damage property and injure and kill passengers and drivers: in the United States only, collisions between wildlife and vehicles have increased by 50 percent in the most recently reported 15 years. These accidents now cost Americans $8 billion every year.