SPR-790

Description:

ADOT uses the Arizona Travel Demand Model - Generation 2 (AZTDM2) to evaluate the effects of planned projects on highway system performance and identify locations where transportation improvements are needed. The current version of AZTDM2 employs a four-step travel demand model process, including a traffic-assignment step in which passenger and freight vehicles are assigned to specific routes on the roadway network. Currently, AZTDM2 employs a static traffic assignment process that represents average daily traffic conditions between origins and destinations. However, traffic conditions in the real world can vary significantly over a single day.

Goal:

The goal is to integrate a dynamic traffic assignment (DTA) step into the AZTDM2 model to better represent fluctuating traffic conditions and enhance ADOT’s ability to evaluate complex modernization projects. This improvement will provide more accurate travel forecasts, aiding in the prioritization of projects and performance tracking of key transportation corridors.

Project Deliverables: