It's a good question you ask. I live on Federal property (Naval Base Bangor) and was told by the Master at Arms that the followingrules pretty much apply to any land that isowned by the Federal government; unless specifically noted. For example, every time I enter baseI have to put the gun in condition four,separate the magazine and the gun and place them at opposite ends of the vehicle (e.g. gun in trunk and magazines/ammo in the glove compartment) and claim them to the guard. Rule of thumb as far as I am concerned is that if it's federal land, keep it in condition four and don't pack it. I know it sucks, but that's just how the government works. I found this on another forum going into detail about the rules of NPS property if you wanted proof. As for the road that goes through there? I'm going toguess that sliver of roadis property of the city and/or state and not subject to federal guidelines. And if you were unfortunate to get pulled over, i doubt they'd charge you for legally carrying. Worse comes to worse, you just "didn't" know.
Possession or use of firearms or other weapons in allNational Park System areas is prohibited (except as otherwise provided in the Code of Federal Regulations, Title 36 parts 7 (special regulations) and 13 (Alaska Regulations). With rare exception (such as times when controlled hunting is allowed) weapons are to be dismantled completely and cased while visiting in NPS areas in the United States. In order to transport weapons through NPS areas they must be dismantled and adequately cased or packed in such a way as to prevent their use. Loaded weapons are subject to confiscation by park authorities.