Over the past 11 years of studying these markers we have seen the markers change styles, in shape, size, colors and yes they also have taken perfectly
good signs completely down and put up new one's with no maker at all.
However, many signs have codes on the fronts of the signs too. There are code words, arrow configurations, and color codes. "Blue" and "Red"
being the most dominant. Markers may not be as prevelant in some areas because of population, facilities, or resource availability.
Carrierwave~





