United States Department of Transportation
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Abstract:This report was prepared under the “Improvement and Operation of the Vermont Travel Model” contract with the Vermont Agency of Transportation (VTrans) for the 2013-2014 year (Year 6) of the contract. The primary objective of the project is to continue maintaining the Vermont Travel Model, ensuring that it remains a comprehensive, effective predictor of travel behavior of Vermonters. The purpose of this report is to document the activities which were completed in the 2013-2014 (Year 6) year of the contract. Other support activities undertaken in Year 6 of the contract using the Model to support VTrans efforts are documented separately. The Vermont Travel Model is a series of spatial computer models which uses the land use and activity patterns within Vermont to estimate the travel behavior of Vermonters. Origin and destination tables are created which describe the number of expected trips between zones. Accommodations are made for commercial-truck trips and the occupancy characteristics of passenger vehicles. The final outputs are traffic volumes by roadway link in the state-wide roadway network. The Model currently includes 939 traffic analysis zones (TAZs) and 5,327 miles of highway-network links. This report contains a description of the Vermont Travel Model, including its history and its current functional capabilities, a description of the data used in this Year, a description of the methods used to process data for use in improving the Model and the results of the update, and a summary of the results of this year’s improvements with recommendations for Year 7.
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