TREC research addresses complex transportation problems by drawing on multiple disciplines, including engineering, planning, economics and design, from across the Portland State University campus. Use the search box at right to search for a specific project.
Research Highlights
Drivers’ Attitudes and Behaviors Toward Bicyclists: Intermodal Interactions and Implications for Road Safety
Tara Goddard
Psychology teaches us that implicit biases—attitudes we hold on a level below consciousness, and may not even be aware of—can have a heavy influence on split-second decisions. In a fast-paced activity like driving, with a lot of moving parts in a complex environment, we make those snap decisions all the time. There are obvious safety implications to this, particularly for the most vulnerable road users. That’s why TREC researchers are becoming more and more interested in studying implicit bias…
Read More
The Impact of Ride Hail Services on the Accessibility of Nonprofit Services
Dyana Mason
Ride hailing services (such as Lyft and Uber) are frequently pointed to as a means of filling mobility gaps in a transportation system, especially in areas that are not well-served by transit. How might nonprofit organizations address the mobility needs of their clients through ride hailing (also known as Transportation Network Companies, or TNCs)? Many people who use nonprofit services (e.g. food assistance, social services, health care or educational support) also experience transportation…
Read More


