United States Department of Transportation
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Travel Model Validation and Reasonableness Checking Manual - Second Edition
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2010-09-24
[PDF-1.70 MB]
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Abstract:The original Travel Model Validation and Reasonableness Checking Manual was published by the Federal Highway Administration (FHWA) Travel Model Improvement Program (TMIP) in 1997. Since the publication of the original manual, the need for quality model validation has increased. Resources for the construction of new facilities have become increasingly scarce, new funding mechanisms such as tolling have become popular, and new travel forecasting techniques focused more on the explanation of traveler behavior than travel patterns have been implemented in a number of regions. These issues have made well validated travel models increasingly important in order to provide decision-makers the assurance they need to confidently use the travel forecasts. However, as documented in the Transportation Research Board (TRB) Special Report 288, Metropolitan Travel Forecasting, Current Practice and Future Direction (SR 288),3 the state of model validation has not necessarily kept pace with the need.
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