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

Travel Choices at TransitOriented Developments: Survey Results from Portland’s Eastside

Jennifer Dill
This report presents results from surveys of residents at several transit-oriented developments (TODs) in the cities of Portland and Gresham, along the MAX blue line between downtown Portland and Gresham. The research complements survey work done in 2005 at sites near three MAX stations in Hillsboro and Beaverton (west of downtown) and the Merrick apartments near the Convention Center in Portland. Results from those surveys are in a May 2006 report, Travel and Transit Use at Portland Ar... Read More

Empirical Observation of the Impact of Traffic Oscillations on Freeway Safety

Christopher Monsere
Soyoung Ahn
Traffic oscillations (also known as stop-and-go driving) are a typical feature of congested traffic flow. They are known to increase fuel consumption and emissions, and decrease driving comfort. It is also speculated that larger amplitudes of oscillations (i.e. larger changes in flow or speed) increase the probability of certain crash types (e.g. rear-end crashes). However, no current study exists that irrefutably confirms or disproves this speculation. The objective of this research is to f... Read More