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

Transit Bus Fleet Management and Optimization Models Addressing New Engine Technologies and Emissions Constraints

Miguel Figliozzi
Ashley Haire
A healthy and efficient public transit system is indispensable to reduce congestion, emissions, energy consumption, and car dependency in urban areas. In addition, public transportation systems play a central role increasing energy independence and supporting livable communities' transportation options and healthy lifestyles. Fleet related costs account for the highest share of fixed and variable bus transit agency costs. In turn, fuel and engine type have a significant impact on fleet p... Read More

Prioritization for Seismic Retrofit with Statewide Transportation Assessment

Peter Dusicka
The bulk of the bridge inventory in Oregon was built prior to the current understanding of bridge response and prior to current understanding of the expected earthquake demands. While some bridges are being replaced due to other deficiencies, majority are expected to continue to stay in service for decades to come. Prioritization method is needed for deciding on bridge investment or for allocating the limited resources available. The overall goals of the research are to develop and apply a re... Read More