It's strategic highway network called national. Learn how to create your own. Select a state below or search to find your map.
Highways, along with clearly indicated cities, points of interest, airports, boundaries, and more. On the map, interstate highways are shown with bright red solid line symbol with an interstate shield label in it with limited highways and principal roads in fainter color. Embed the above road detailed map of united states into your website. That you can download absolutely for free.