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Published online by Cambridge University Press: 28 April 2015
Transportation is a vital element in our daily lives. Access to jobs, shopping, and other services depends upon some form of transportation. The principal means of transportation in the United States continues to be the automobile. Census figures show that in 1975, 84.7 percent of all workers in this country and 84.5 percent of the workers in non-metropolitan areas used the automobile to get to work (U.S. Bureau of the Census).