The United States Numbered Highway System is an integrated network of roads and highways numbered within a nationwide grid in the contiguous United States. As the designation and numbering of these hi
Bundesstraße
…only single carriageway with one lane for each direction and no hard shoulder pull-out area. The closest equivalent in the United States would be the United States Numbered Highway System. In contrast to Germany, according to a 2002 amendment of the Austrian federal road act, Bundesstraßen is the official term referring only to autobahns…
The "final" U.S. Highway plan as approved November 11, 1926
This sign, photographed in 1941 on US 99 between Seattle, Washington, and Portland, Oregon, illustrates one rationale for a federal highway system: national defense.