ABSTRACT
Rail and road transportation systems are an important mode of transport throughout the world. Each day, they transport millions of passengers and millions of dollars worth of goods from one point to another. For example, in the United States, the railway system alone comprises approximately 3,000 track terminals and stations that serve over 600 small regional roads and 15 large freight railroads; U.S. revenue from commercial motor vehicle operations is around $400 billion per year [1, 2].
