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

What do we know about Location Affordability in U.S. Shrinking Cities?

Joanna Ganning Keith Bartholomew , J. Rosie Tighe
This research led the Department of Housing and Urban Development (HUD) to rethink the way they use their Location Affordability Index (LAI). From Josh Geyer, Office of Environment and Energy, High-Performance Buildings Team, U.S. Department of Housing and Urban Development: "Dr. Ganning’s thorough and convincing analysis of the strengths and weaknesses of the Location Affordability Index led HUD to rethink using Census block groups as the geographical unit of analysis. As a result, Version 3… Read More

Racial Bias in Drivers' Yielding Behavior at Crosswalks: Understanding the Effect

Kimberly Kahn
Led by Dr. Kimberly Kahn of Portland State University, the purpose of this investigation is to explore social identity-related factors that influence drivers’ behaviors in interactions with pedestrians at crosswalks. Dr. Kahn and her research team conducted a field experiment where black and white male and female pedestrians wore identical clothing and repeatedly crossed the same intersection in a systematic manner, with coders in the field marking drivers’ behaviors. The initial study … Read More