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The Scope of Transportation Economics
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agencies Agriculture aircraft airline airline industry Amtrak analysis areas behavior California capacity capital cars Census choice class I railroads classification yard commodity flows competition County D.C. Heath demand models Department of Transportation domestic Econometric efficiency elasticity equation estimated factors fare federal Figure forecasting growth haul highway impacts important increased intercity intercity rail Interstate Interstate Commerce Commission Journal of Economics level of service Lexington Lexington Books long-run manufacturing marginal cost maximization measure methods microeconomic modal modes motor carriers motor trucking movements Northeast Corridor oligopoly operating optimal output percent problems production function profit rail passenger service rail rates railroad industry regional regulation regulatory Research result returns to scale revenue sector shipments shippers short-run Source Statistics Table theory tion ton-mile tonnage traffic transit transportation economics Transportation Firm transportation industries transportation services U.S. Department United Urban Economics variable Washington yard