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

Improved Pedestrian Safety at Signalized Intersections Operating the Flashing Yellow Arrow

David Hurwitz
Christopher Monsere
Transportation facilities, when designed appropriately, attempt to provide a balance between safety and efficiency while acknowledging the design implications on their most vulnerable users. At signalized intersections, pedestrians are considered to be amongst the most vulnerable. When in the crosswalk at intersections without protected left-turn phasing, pedestrians are particularly at risk from left-turning vehicles. Though legally required to yield to opposing though vehicles and pedest... Read More

Long term evaluation of individualized marketing programs for travel demand management

Jennifer Dill
Cynthia Mohr
With increasing concerns over traffic congestion, fossil fuel use, air pollution, and livability, coupled with severe constraints on funding for new transportation infrastructure, cities and regions are increasingly looking to a wider range of options to address transportation problems. Transportation demand management (TDM) is one of those options used over the past 30+ years with varying success. Historically in the U.S., programs have focused on commute trips and employers or broad-based a... Read More