State Road Maps
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Road maps are the easiest—and least expensive—maps to obtain. Although the days of free gas station maps are only a memory today, most of the state transportation and tourism bureaus still provide free highway maps. These state government maps are of high quality, and they are frequently updated.
The United States of America is the third largest country in the world, covering almost 6.5 percent of the earth's surface. Without navigation tools like road maps and GPS units, American drivers would find it difficult to travel from place to place without getting lost, so travel maps are essential to help people find their way from state to state, and from coast to coast.
Throughout the history of the United States, an adequate transport infrastructure has been important. Commerce, communication, trade, and tourism all depend on interstate transportation and navigational information to travel from point A to point B, and for other reasons as well. The mapping of time zones and the charting of travel schedules provide essential reference data for freight, courier, and public transport organizations, and have helped to develop the American people's understanding of time and distance—from Abraham Bradley's early post-road maps and stagecoach schedules to modern Greyhound bus route diagrams and schedules.
Navigational maps help to define both the cultural and topographic nature of America. For instance, the contrast between its extensive road networks and its relatively limited passenger railroad infrastructure suggest that the USA relies primarily on automobiles for transportation. America's roads and highways have also been used to illustrate the nation's topography, as demonstrated in this All Streets black-and-white rendering by Ben Fry, which uses only transport routes to map out the form of the nation.
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State Road Maps