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Veelvoorkomende woorden en zinsdelenadditional air traffic control air travel aircraft allocate Amtrak average benefits billion bus and rail capacity capital carriers charges cities commercial commuters competition congestion pricing Congress develop economic effects of privatization efficient estimate example expenditures fares Federal Aviation Administration federal government flight freight funds gates high-speed rail implement improve incentive increase inefficiencies infrastructure innovations intercity transportation investment labor landing fees low-cost carrier major marginal cost Metro monopoly Morrison and Winston motorists National Nav Canada NextGen operating costs optimal passengers percent policymakers potential private airports private firms private highway private sector privatization and deregulation projects public sector rail systems railroads rates recent reform regulations revenues road pricing routes runway safety shippers social Southwest Airlines spending subsidies tion toll transit agencies transit systems trips truckers trucking U.S. transportation system United urban rail transit urban transit vehicle Washington Washington Metro Winston and Shirley Bibliografische gegevens |