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From detailed data, lays out the case for the high economic efficiency of rail transport, particularly freight rail transport, pointing out that such efficiencies will be increasingly important in an era of stressed resources, global competition, and increased demand for goods and services. Analyzes rail efficiency in terms of its sparing use of energy, its economies of scale, and its environmentally friendly profile by comparison to highway or air transportation. Also discusses recent advances in rail engines, roadbed technology, and traffic control systems.