The United States Numbered Highway System is an integrated network of roads and highways numbered within a nationwide grid in the contiguous United States.
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In 1926, the United States Numbered Highway System was established, creating the first national road numbering system for cross-country travel. The roads were ...
United States Numbered Highways are components of a national system of highways that is administered by the American Association of State Highway and ...
The National Highway System (NHS) is a network of strategic highways within the United States, including the Interstate Highway System and other roads ...
Highways are split into at least four different types of systems in the United States: Interstate Highways, U.S. Highways, state highways, and county ...
There are 70 primary Interstate Highways in the Interstate Highway System, a network of freeways in the United States. These primary highways are assigned ...