There are a number of different road designations in the United States, from highways and freeways to interstates and routes, and it can cause some confusion with different laws and regulations.
Accompanied by: Colorprint United States highway map, c2001. 1 map (scale 1:180,000) ; 79 x 120 cm. on sheet 97 x 127 cm. folded to 19 x 26 cm.). Includes page reference map on p. [2] of cover.
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