Driving through AR

We took a leisurely drive through a rural stretch of northwestern Arkansas today. We were traveling through the Ozark hills on a divided highway (two lanes in each direction) when I noticed something peculiar. 

Every now and again I would pass a roadsign that appeared to be placed backwards from the perspective of the motorists that were passing them.

I glanced in the rearview mirror and saw that the signs read "Wrong Way, Do Not Enter.". Apparently (based on the sheer number of these signs) this is a big problem in Arkansas.

They must be plagued by a large number of directionly challenged motorists in this state.