Journal of the Transportation Research Forum

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The Journal of the Transportation Research Forum (JTRF) contains original manuscripts which are timely in scope and germane to transportation.

Journal of the Transportation Research Forum Cover

Articles in this Journal

U.S. and European Freight Railways: The Differences That Matter

This paper examines the differences between the United States (U.S.) and European (EU27) freight railways. The inherent or structural factors influencing the railways modal share will be evaluated. It was found that nearly all of the disparity in mod...

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Spatial Transferability: Analysis of the Regional Automobile-Specific Household-Level Carbon Dioxide (CO2) Emissions Models

This paper compared performance of methods for combining model information estimated in one region and applied to another region to improve estimation results. The application is for models developed to estimate household-level automobile-specific CO...

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Rail Market Share of Grain and Oilseed Transportation

The share of the grain and oilseed harvest moved by rail has been declining since 1980, when the Federal Motor Carrier Act and the Staggers Rail Act were passed. Large structural changes associated with these acts affected the decline over the follow...

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Modeling User Equilibrium in Microscopic Transportation Simulation

User equilibrium refers to the network-wide state where individual travelers cannot gain improvement by unilaterally changing their behaviors. The Wardropian Equilibrium has been the focus of a transportation equilibrium study. This paper modifies th...

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Introduction of Heavy Axle Loads

The Association of American Railroads (AAR) initiated the Heavy Axle Load (HAL) Research Program in 1988 in order to “provide guidance to the North American railroad industry about whether to increase axle loads and to determine the most economic pay...

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Future Substitutes for Diesel Fuel in U.S. Truck and Railroad Freight Transportation

This paper explains why diesel fuel is the preferred fuel in freight transportation. It identifies possible substitute fuels for motor carriers and railroads that are currently available and under development. It identifies which of these substitutes...

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A Framework for Determining Highway Truck-Freight Benefits and Economic Impacts

This paper proposes a method for calculating both the direct freight benefits and the larger economic impacts of transportation projects. The identified direct freight benefits included in the methodology are travel time savings, operating cost savin...