United States

:For other uses, see US (disambiguation), USA (disambiguation), and United States (disambiguation).

Transportation

Because the United States is a relatively young nation, most of the development of U.S. cities has taken place after the invention of the automobile. To link its vast territories, the United States built a network of high capacity, high speed highways, of which the most important aspect is the Interstate Highway system, commissioned in the 1950s by President Dwight D. Eisenhower and modeled after the German Autobahn. The United States also has a transcontinental rail system which is used for moving freight across the lower forty-eight states.

Related Topics:
Automobile - Highways - Interstate Highway - Dwight D. Eisenhower - Autobahn - Transcontinental rail system

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Passenger rail service is provided by Amtrak, which serves 46 of the lower forty-eight states.

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Many cities in the United States have extensive mass transit systems. New York City, NY operates one of the world's largest and most heavily used subway systems. The regional rail and bus networks which extend into Long Island, New Jersey, Upstate New York, and Connecticut are among the most heavily used in the world.

Related Topics:
Mass transit - New York City - NY - Subway - Regional rail

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Air travel is often preferred for destinations over 300 miles (500 km) away, and some airports, such as Hartsfield-Jackson Atlanta International Airport and Chicago's O'Hare International Airport, are among the busiest in the world. There are several major seaports in the United States, the three busiest are the Port of Los Angeles (California), Port of Long Beach (California) and Port of New York/New Jersey. Others include Houston, Texas, Charleston, South Carolina, Savannah, Georgia, Miami, Florida, Portland, Oregon, San Francisco, California, Boston, Massachusetts, Philadelphia, Pennsylvania, and Seattle, Washington, plus, outside the contiguous 48 states, Anchorage, Alaska and Honolulu, Hawaii.

Related Topics:
Air travel - Mile - Km - Airports - Hartsfield-Jackson Atlanta International Airport - O'Hare International Airport - Seaport - Port of Los Angeles - Port of Long Beach - Port of New York/New Jersey - Houston, Texas - Charleston, South Carolina - Savannah, Georgia - Miami, Florida - Portland, Oregon - San Francisco, California - Boston, Massachusetts - Philadelphia, Pennsylvania - Seattle, Washington - Anchorage, Alaska - Honolulu, Hawaii

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