Innovations in Freight Demand Modeling and Data Improvement (2014) / Chapter Skim
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Pages 37-41
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From page 37... ...
Florida Multimodal Statewide Freight Model: A Model Incorporating Supply-Chain Methods and Providing Linkages to Regional TourBased Truck Models Colin Smith, Kaveh Shabani, and Maren Outwater RSG, Inc. Vidya Mysore FHWA Resource Center S
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From page 38... ...
important in freight modeling as well. In research funded by the Federal Highway Administration (FHWA)
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From page 39... ...
amount of commodity shipped on an annual basis between each pair of firms is apportioned based on the number of employees at the buyer and their industry, so that observed commodity flows are matched. Distribution Channels Using a multinomial logit model, each shipment between each buyer-supplier pair is assigned a probability of choosing a specific distribution channel to represent the supply chain it follows from the supplier to the consumer.
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From page 40... ...
Overview of the Regional Tour-Based Truck Model The Florida Multimodal Statewide Freight Model is designed to be integrated with a regional truck-touring model, which is a sequence of models that takes shipments from their final transfer point to their final delivery point. The final transfer point is the last point at which the shipment is handled before delivery, i.e.
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From page 41... ...
Delivery Time of Day This multinomial logit model predicts the departure time of the truck at the beginning of the tours. Based on this, the travel time of each trip, and the stop duration of each delivery, all of the trips on the tour can be associated with a time period for assignment purposes.
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