Statewide Travel Forecasting Models (2006) / Chapter Skim
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With the exceptions of Ohio and Oregon, statewide models still closely follow urban models in structure within their passenger travel components. However, there is a trend away from truck-only freight components toward commodity-based freight components, STATEWIDE TRAVEL FORECASTING MODELS SUMMARY
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Most states with models have avoided original data collection; tending to rely heavily on secondary data sources. Important data sources for passenger components include the Census Transportation Planning Package, the National Household Travel Survey, MPO databases, the American Travel Survey, and in-house traffic counts.
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Prominent validation data sources are passenger vehicle counts, truck counts, national default trip generation values, OD flows from the Census Transportation Planning Package, and locally collected survey data. The five case studies help to illustrate the wide range of reasonable approaches to statewide travel forecasting.
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