Freight Transportation Energy Use : Appendix. Transportation Network Model Output.

PDFTech ReportUnited States. Dept. of Transportation. Office of the SecretaryBronzini, M. S.John A. Volpe National Transportation Systems Center, (U.S.)Volpe National Transportation Systems Center, Technical Reference CenterThe overall design of the TSC Freight Energy Model is presented. A hierarchical modeling strategy is used, in which detailed modal simulators estimate the performance characteristics of transportation network elements, and the estimates are input to a multimodal transportation network model which emulates system performance. The purpose of the model is to predict the impacts of changes in modal technology and operations on transportation energy use, costs, service levels, and on shipper modal choice decisions. The model can also generate energy-optimal freight transportation usage patterns and predict the consequences to carriers and shippers of energy-use optimization. Model calibration results for a base year (1972) and baseline estimates for the year 1990 are presented