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

From Knowledge to Practice: Rethinking Streets for People on Bikes

Marc Schlossberg John Rowell , Roger Lindgren
This project is a follow up to a highly successful previous NITC project and subsequent nationally distributed book, called “Rethinking Streets: An Evidence Based Guide to 25 Street Transformations. The success of the first book demonstrates a need for easy access to evidence-based transportation information that can be used by practitioners, community members, policy makers, educators, and researchers. This project is to produce a follow-up volume, but focus on streets redesigned to… Read More

Advancing Safety At Intersections: Measuring The Effectiveness Of Traffic Signal Strategies For Speed Management On Operations And Safety

Sirisha Kothuri
Many states are adopting the Safe System approach (USDOT, 2022) to improve traffic safety. As the role of speed in injury severity is becoming increasingly clear, one of the key elements of a Safe System approach is Safer Speeds. Specifically, higher motor vehicle speeds lead to higher injury severity during a collision, especially for nonmotorized users (Rosén and Sander 2009; Tefft 2013) who are the most vulnerable users in the transportation system. Most pedestrian crashes occur on higher… Read More