2022 Travel Demand Model Update and Validation Report
BackThis document provides a summary of the 2022 base Metropolitan Area Planning Agency (MAPA) Travel Demand Model (TDM). The MAPA TDM was updated to a new base year of 2022 using the Iowa Standardized Model Structure 2.0 (ISMS 2.0).
A TDM is an important tool for transportation planning that estimates and distributes the area’s trips across its transportation network. The modeling process attempts to replicate existing traffic levels and transit ridership and forecast future traffic and transit demand based on anticipated population and employment growth.
One of the primary purposes of the TDM is to support the development of the Metropolitan Transportation Plan (MTP). The model can be used to identify potential future deficiencies in the road network and used to estimate the impacts of various scenarios such as adding new roads, changing the capacity of existing roads, or removing roads from the network.