Statewide Travel Forecasting Models (2006) / Chapter Skim
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that concerns passenger and intercity travel forecasting. Appendix D is an annotated bibliography of the statewide and national freight forecasting techniques.
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The proceedings of the Peer Exchange have been published by TRB as Transportation Research Circular E-C075. Presentations at the 2004 Annual Meeting of the Transportation Research Board, Session on Statewide Travel Forecasting Models This session involved presentations by six authors on new developments in statewide travel forecasting models.
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"Evaluating Role of Distance and Location in Statewide Travel Demand Forecasting by Using American Travel Survey" 1999 O'Neill et al.
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Operational characteristics that are of general interest for travel models are base state, average weight with payload, type of business, miles driven outside state, miles driven by trip length, miles driven by commodity group (50 groups including empty and waste) , miles driven by hazardous materials class and type of service.
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Reebie TRANSEARCH Reebie can supply data on multimodal commodity flows between locations in the United States at a greater level of spatial detail than the CFS. Reebie integrates data from both public and proprietary data sources.
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-based survey -- Use of the GPS to trace the location of a traveler or vehicle over time, which would be linked to a travel diary. Gravity expression -- Sometimes called a "gravity model," which determines the production-to-attraction trip pattern as a function of the number of productions and attractions in each zone and measures of proximity between zones.
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Microscale traffic simulations can be used as post-processors for output from a statewide travel forecasting model, so as to provide better estimates of delay from the assigned traffic. Monte Carlo simulation -- A technique that is used within microsimulation that can generate random events, such as households of given characteristics, trips, start times, modes, and vehicles.
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For example, planners often refer to a trip distribution technique as a "gravity model" or a mode-split technique as a "logit model." To help distinguish between various parts of a model, the following terms are used herein. Algorithm -- A series of expressions or computational processes that produces a specific result within a step.
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