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

Value of Reliability

Miguel Figliozzi
David Levinson
The issue of travel time reliability is becoming more critical for the movement of people and freight. In order to examine issues related to the value of travel time reliability, we plan to test drivers’ preferences for alternate commuter routes in a real world setting. The research participants will drive on three different routes in two cities: (1) primarily freeway, (2) primarily arterial roads, and (3) other streets. Freeways have a possible trade-off between high speeds and congestion ... Read More

Evaluation of Bicyclists Exposure to Traffic-Related Air Pollution along Distinct Facility Types

James Pankow
Miguel Figliozzi
Very few concurrent measurements have been carried out on cyclist physiology with air quality, and no measurements that incorporate detailed traffic data. Due to this lack of knowledge, there are significant uncertainties and debate about the net health effects of cycling as a means of transportation in heavily trafficked urban areas. It is perhaps even astonishing that there are currently neither guidelines nor even a moderate understanding of cyclists\\\' uptake of urban pollutants when tra... Read More