I patrolled an area with a large deer population and we handled a lot of deer vehicle crashes each year. During the fall rut, again in the spring during the birthing season and the planting season, it was not unusual to handle multiple deer/vehicle crashes in an 8 hour shift.
For whatever reason, (Ohio loves to put up signs along their highways), the state/county puts up deer crossing signs, it's a huge waste of money. I've never been able to find anyone at ODOT or the County garage who can explain to me the criteria for where the signs are posted. It almost seems like the Road crews are sent out with a certain number of signs and they are told to get rid of them.
Like most LEO's who have handled deer vehicle crashes, it was not unusual to have a living, breathing adult, usually a woman, (seriously) ask why the deer were allowed to cross the road where there were no signs. When you try to explain to the person that the deer is a wild animal and is unable to read the signs, the person would just look blankly back at you with that completely confused head tilt. (Some times you really had to wonder how folks survived to be as old as they were and be so dumb.)