TREC research addresses complex transportation problems by drawing on multiple disciplines, including engineering, planning, economics and design, from across the Portland State University campus. Use the search box at right to search for a specific project.

Research Highlights

Understanding the Impact of Decentralizing Homeless Services on Transportation and Mobility in Salt Lake County

Sarah Canham Ivis Garcia , Jeff Rose , Shannon Jones
How can relocating services away from a downtown center change the transportation decisions and patterns for persons experiencing homelessness? And how do those changes affect access to the services they need? New research from the University of Utah (UU) examines the impacts of decentralizing homeless service locations through a case study in Salt Lake County, Utah. Prior to 2019, resources for people experiencing homelessness in the county were concentrated in a single location: The Road… Read More

Machine Learning and Big Data-Based Approaches for Quality Freeway Volumes

Adrian Cottam
Traffic volumes are essential for the operation of Intelligent Transportation Systems (ITS) and for use in performance metrics for Transportation Systems Management and Operations (TSMO). Maintaining high quality freeway volumes is paramount to ensure that freeway ITS solutions, such as ramp meters, operate smoothly. Furthermore, freeway performance metrics need quality volume data to provide an accurate portrayal of real-world conditions. This dissertation focuses on improving the quality of… Read More