When I was in college in Central WI, I was getting a road kill almost every year. One my brother-in-law hit, one a roommate hit, and another a driver ahead of me hit. Road kills are fine to eat provided they are processed in time and not mangled too bad or guts spilled. The ones I got had almost no meat loss.
Deer up by us in N. WI are in such low numbers I can count the TOTAL number of road kills I have seen in our area all year on one hand. Good in that I don't have to dodge deer when I drive at night (at all) but not so great for hunting. And this fall I drove 2 nights a week from 9-10 PM and did not have to slow down for one deer.