Right after being hit by cars, hitting a deer is one of my big worries about my commute. I regularly see as many as 20 deer a day on my spring and fall commutes. Fortunately, most of the places I have seen them crossing the road have fair sightlines, but there are a couple downhills that have sharp curves that are a concern both for deer and oncoming cars crossing the centerline. My closest wildlife collision was a turkey that flew across the road about 10 yards in front of me. He dropped out of a roost spot that I hadn't noticed. Visual field full of turkey is quite startling.