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Development of a Multimodal Full-Cost Model – MODECOST
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1996-03-01
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[PDF-1.15 MB]
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Edition:Interim
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Abstract:This report summarizes the development of MODECOST, a software program useful in comparing multimodal investment alternatives. First, various cost categories for three modes of a passenger transportation system - auto, bus, and light rail - are identified. This is followed by a discussion of procedures used for annualizing the life-cycle costs of each component of a transportation system. The report also summarizes the unit cost data found in the literature and data received from officials at the Texas Department of Transportation, as well as from staff of other public agencies around the country. The unit cost data presented include the price of an automobile or transit vehicle, the cost per mile to construct a highway or rail line, and the damage value of air pollutants, among others. In addition, this report describes various algorithms and assumptions utilized to estimate various components of the full cost of transportation systems, including travel time, air emissions, pavement thickness requirements, and the cost of accidents not covered by insurance. In general, the model allows users to input whatever unit cost values they determine to be appropriate for each mode, while the model's built-in algorithms and assumptions are used to estimate various system parameters. The unit costs are then multiplied by the system parameters in order to obtain an estimate of the full cost of a transportation system alternative.
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