I live in a small community and “official” speed limit signs are posted on all public roads as expected. I noticed, though, that on private roads, like the one that cuts through our local golf course, have unofficial speed limit signs. Instead of being white with black lettering, they are brown with white lettering. I obey these signs because there are golfers and golf carts around and I wouldn’t want to hit something and/or someone due to excessive speed. I assume that private property owners can set the speed limit of their roads to whatever they want, however, I wouldn’t expect the police to enforce those speed limits.
I’ve noticed there are now public roads with these same brown and white speed limit signs. Often there is an accompanying sign that says “Slow Down, Children at Play”. I realize parents want to slow down traffic for the safety of their kids, but are they allowed to set the speed limit of a public road? I can see them petitioning the local authority to reduce the speed limit in their neighborhood, but that’s a different thing to putting up speed limit signs. Am I legally obligated to obey these seemingly “unofficial” speed limit signs? It’s not like anyone is going to enforce them.