Traffic engineers in Europe have studies that show safety is increased when striping and traffic control signs are removed. They claim that cars slow down
and it makes it safer for bicycles and pedestrians.
A small town in Oregon has started to implement this on some narrow streets. I hate to admit it but it does help.
I will say that is true, on country roads that have no markings or signs, I go 45 at most even though if the same road has markings I would go 60