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

Practical Approximations to Quantify the Impact of Time Windows and Delivery Sizes on Freight VMT in Urban Areas

Miguel Figliozzi
Supply chains and urban areas cannot thrive without the efficient movement of goods and accessibility to services. Commercial vehicle flows and VMT are the ultimate materialization of supply chain activities in the public road network (Figliozzi, 2006). From a freight planning perspective, it is crucial to understand and quantify how routes and distribution decisions translate into commercial VMT. A recent study indicates that commercial vehicles carrying goods or providing services acco... Read More

Promoting Active School Travel by Making it Cool: a quasi-experimental study using Boltage

Yizhao Yang
Lynn Weigand , Ihab Elzeyadi , Noreen McDonald , William Harbaugh (consultant)
Research on children's school travel suggests two sets of factors critically affect the use of active school commuting modes (i.e., walking or biking) among children. The first involves external factors, such as trip distance, neighborhood walkability, general safety, and parents' employment schedule, that can help explain parents' choice of school travel modes. The second factor is more internal, focusing on parents' and children's attitude to and motivation/preference for walking or biking ... Read More