Simulation of Regional Freight Movement on the TTMNet: Trade and Transportation Multinetworks


The paper describes a simulation model called TTMNet, constructed for the purpose of studying the effects of highly developed information technologies and logistic strategies (e.g., e-commerce and the real-time information) on freight transportation. TTMNet is formulated as a multi-level product supply chain system that integrates the financial, informational, logistical, and physical aspects of transportation networks, with interactions between each of these networks. Several simulators, including a freight traffic simulator, a supply chain decision-making simulator, and a pseudo-real-time information simulator, are involved. The freight traffic simulation is the focus of this paper. As part of this simulator, a learning model is set up to help decision-makers estimate transportation cost based on past experiences. Given the stochastic nature of these transportation costs and of the freight demands simulated by the system, the route for an origin-destination shipment may not remain optimal during a trip, and may change along the way. A vehicle redirection procedure is presented to handle this. A numerical example is designed to compare a set of freight movements under two scenarios, one supported by and the other not supported by pseudo-real-time information on traffic conditions. TRB 2003 Annual Meeting CD-ROM Paper revised from original submittal. Xu, J., Hancock, K.L., and F. Southworth 3

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@inproceedings{Correspondent2002SimulationOR, title={Simulation of Regional Freight Movement on the TTMNet: Trade and Transportation Multinetworks}, author={Jinghua Xu Correspondent and Kathleen L. Hancock and Frank Southworth}, year={2002} }