We have a lot of roadside signs in Montana. There are the roadside memorial crosses, the standard "Seniors '10" on overpasses, and often adopt-a-highway signs. This one was edited. Do people throw more trash along a stretch of highway in which the atheists have adopted; or do they want to keep their Christian trash off of that highway? Occasionally the local Ku Klux Klan adopts a highway. Does that affect littering?