Transportation: Principles and Problems

advantages agencies air transportation authority average basis Bureau capital carload cars cent Chap charges Civil Aeronautics Civil Aeronautics Board class rates classification common carriers companies competition Cong Congress cost of reproduction depreciation discrimination distance earnings Economics effect Elkins Act factors fixed haul Hepburn Act highway increase industry Interstate Commerce Act Interstate Commerce Commission intrastate investment joint rates legislation less less-than-carload loading Mann-Elkins Act mileage miles Mississippi River Motor Carrier Act motor carriers operating expenses original cost out-of-pocket cost overcapitalization passenger pipe lines portation prescribe profits Public Utility rail Railway rate of return reasonable reduced regulation revenue roads routes securities Sess shipments shippers short-haul Statistics stockholders Supreme Court terminal territory tion ton-miles trans Transport Economics Transportation Act truck valuation volume of traffic water carriers waterways