TREC’s broad research program addresses complex transportation problems by drawing on multiple disciplines, including engineering, planning, economics and design, from across the Portland State University campus. Browse the featured projects below or use the search box at right to search for a specific project. NOTE: If you're looking for projects from our partner campuses, use the NITC research search.

Research Highlights

Incorporating Pedestrian Considerations into Signal Timing

Sirisha Kothuri
Dissertation Summary:Over the past two decades, walking as a mode of transportation has gained increased attention owing to the many benefits associated with it, such as reduced emissions, lower congestion levels and improvements in personal health. Despite the increased attention, little resources have been directed towards optimizing the transportation system for the benefit of pedestrians. Until now, signal timing at intersections has been largely vehicle centric without explicitly ... Read More

Future Flooding Impacts on Transportation Infrastructure and Traffic Patterns Resulting from Climate Change

Heejun Chang
Martin Lafrenz , Miguel Figliozzi
Climate change in the Pacific Northwest of America is likely to bring more frequent, heavier winter precipitation as temperature rises. These changes in precipitation patterns have significant implications in hydrology and socioeconomic sectors that could be affected by changes in hydrology. Transportation infrastructure and travel patterns are also vulnerable to potential changes in runoff regimes and stream geomorphology. The 2006 and 2007 winter storms resulted in massive flooding, caus... Read More