Unanswered Question #1

Why is roadkill almost always on the shoulder of the road?

Do animals, in their last dying breath (and a little too late), realize that they don't want to be a hazard to drivers and make their way over to the shoulder? Is there a "Roadkill Guy" who is a city employee, responsible for moving these eyesores?

Your wisdom is highly appreciated, as this is one of my random questions that my husband can't seem to answer for me.