Innovations in Freight Demand Modeling and Data Improvement (2014) / Chapter Skim
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Pages 23-29
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From page 23... ...
Rail Freight Commodity Models: A First Generation Effort in Iowa Phillip Mescher Iowa Department of Transportation Ronald Eash and Mary Lupa Parsons Brinkerhoff Presentation Notes: Presentation by Phillip Mescher, Iowa Department of Transportation (DOT)
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Modeling and Logistics Data Integration • Integrating public and private data sources -- new sources of data that can be merged to create improved opportunities for modeling. • Freight demand modeling recommendations -- new modeling technologies.
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1. For 2007 and 2040, FAF3 data for four freight modes in Iowa are processed.
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The Iowa rail network noted above is the first building block of the rail freight model. Once the network was built and reviewed, however, it became apparent that rail networks and freight rail models are very different from the corresponding highway-based network and models.
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fulfills other criteria, such as a selected track owner, shipping cost, origin-destination efficiency, or other. The centroid connector approach will be similar to a transit park-andride model in which drivers find and use the most efficient station based on criteria other than distance.
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2. Iowa DOT Point Files: The Iowa DOT has researched and mapped a set of important point location maps relevant to freight, including a.
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both on the truck and rail sides, do not share data freely and openly with the public or with public agencies. Hence, the ability to calibrate and validate rail freight models is very much limited and is a huge challenge.
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