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

Better Representation of the Pedestrian Environment in Travel Demand Models

Kelly Clifton
Robert Schneider , Jennifer Toole
The tools available to transportation planners to forecast non-motorized travel behavior are woefully inadequate for that purpose. Despite recent attention paid to the importance of physical activity for health purposes and transportation policy initiatives that seek to reduce auto use and encourage walking, cycling and transit, extant modeling tools suffer from a lack of spatial acuity and behavioral sensitivity to the preferences of non-motorized travelers. Accurate prediction of the likel... Read More

Freight Distribution Problems in Congested Urban Areas: Fast and effective solution procedures to time-dependent vehicle routing problems

Miguel Figliozzi
Congestion is a common phenomenon in all medium to large cities of the world, and Portland is no exception. For example, the City of Portland Office of Transportation indicates that the growth in truck movement and traffic congestion is rapidly increasing on Portland’s street system. Freight traffic may grow even faster than passenger traffic. Between 2000 and 2020 the number of medium and heavy truck trips is expected to nearly double (COPOT, 2005). From the operational point of view, co... Read More