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This work constructs an integrated logistics and transportation system to simulate enterprise-wide freight movements and to study the interactive influences among, and the effects of highly developed information technologies on, logistic decision-making, freight-distribution patterns, and commercial vehicle operations. The integrated system is formulated as(More)
The paper describes a prototype Dynamic Freight Traffic Simulation model called DyFTS, constructed for studying the effects of highly developed information technologies and logistic strategies on freight transportation. DyFTS is designed as a highly adaptable system that can be easily embedded into a more comprehensive transportation simulation model.(More)
This report, prepared in cooperation with the New England Transportation Consortium, does not constitute a standard, specification, or regulation. The contents of this report reflect the views of the authors who are responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the views of the New England(More)
A Category Sequence Traversal Query (CSTQ) is a new type of category based query that determines the minimum-cost path with a predefined origin-destination pair, traversing at least a single selection from each of a set of categories in a specified order. CSTQ has distinct applications in transportation trip planning and other potential applications(More)
An analytical model is developed to assign regional freight across a multimodal highway and railway network using geographic information systems. As part of the regional planning process, the model is an iterative procedure that assigns multimodal freight traffic to the network to achieve overall network optimum. The procedure integrates optimization(More)
The movement of freight is an important but often overlooked aspect of the transportation system. While much research and planning has centered on passenger transport, freight demand and modeling have received relatively little attention due to lack of appropriate data from which accurate vehicle flows could be predicted. This report proposes a methodology(More)
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