All it means is that it is an association type of road and is not maintain by the town. Another words it isn't a town road and no it dose not mean for you to stay off of it unless it is a private drive way and not a road way to several homes. This is located all over the place. It may say something like this, Places Mill Road P or PVT that is still a road that you can travel on. Now if it says
KEEP OUT and says
Places Mill Road P or PVT then one should obey that sign...
