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Contents : The Iowa Travel Analysis Model iTRAM Phil Mescher Office of Systems Planning Iowa Department of Transportation 800 Lincoln Way Ames Iowa 50010 phil.mescher@dot.iowa.gov ABSTRACT This presentation discusses the evolution of the Iowa Department of Transportation (Iowa DOT) statewide model the key purposes for using a statewide model and future uses of the model. Key words: Iowa Department of Transportation statewide model travel Proceedings of the 2009 Mid-Continent Transportation Research Symposium Ames Iowa August 2009. 2009 by Iowa State University. The contents of this paper reflect the views of the author(s) who are responsible for the facts and accuracy of the information presented herein. Mid-Continent Transportation Research Symposium The Iowa Travel Analysis Model Phil Mescher Office of Systems Planning Iowa Department of Transportation August 2009 Mescher 2 Consultant Team Paul Hershkowitz Wilbur Smith Associates Mary Lupa Wilbur Smith Associates Dane Ismart The Louis Berger Group Mescher 3 Overview of Today s Presentation Review the evolution of the Iowa DOT statewide model Discuss the key purposes of the Iowa STM Outline the findings of the architecture step Get a briefing on the status of the model components Iowa TAZ Iowa Network Buffer (National) Zones SE Data FAF2 (Trucks) Review Planned Uses of the Statewide Model Look at Validation Statistics Mescher 4 iTRAM Timeline Architecture Completed April 2007 Trip Generation from 2001 National Household Travel Survey Summer 2008 Network Transformation (from Iowa GIMS) Fall 2008 Calibration Work Winter 2009 Validation July 2009 Mescher 5

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