MICHIGAN'S STATEWIDE TRAVEL DEMAND MODEL

The Travel Demand and Intermodal Services Section of Michigan's Department of Transportation is responsible for the development, maintenance and application of the Statewide Travel Demand Model. Michigan's Statewide and Urban Travel Demand Models are intended to provide the analytical framework for assessing transportation system performance and deficiency analysis, long range plan development, and systems level project analysis, as well as to provide the spatial analytical framework for many of the management systems. The Statewide Travel Demand Model resides on the TransCAD 3.1 GIS/Travel Demand Model platform. TransCAD, a licensed product of the Caliper Corporation, is a Geographic Information System (GIS) with travel demand analysis capabilities. This paper and presentation outlines the organizational and modeling processes within the State of Michigan. The statewide model includes 2307 instate zones and 85 outstate zones, a line data base with more than 13,000 highway links, and 8,000 nodes. The model is person trip based and has capabilities to forecast travel for all motorized ground transportation. Additional features include a truck model which estimates flows by commodity group and a local transit sketch planning model.