A general method for cost-effectiveness evaluation of off-road locomotion, air, and other transportation systems operating in the military environment has yet to be developed. The U. S. Dept. of Commerce, Bureau of Public Roads, Office of Research and Development, has sponsored research work aimed at developing a generalized model of United States transportation. At this time, a generalized model of the performance of transport systems operating in one, two, and three degrees of freedom is being prepared for computer programming. The applicability of this model to solving questions of the relative cost effectiveness of military transports is discussed in this paper.