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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

How Essential is Essential Air Service? The Value of Airport Access for Remote Communities

Austin Drukker
Essential Air Service is a federal government program that provides subsidies to airlines that provide commercial service between certain remote communities and larger hubs, which proponents argue are justified because driving to larger airports would be prohibitively expensive for residents of these communities. I estimate the value of Essential Air Service to local communities using a revealed-preferences approach by formulating and estimating a discrete-choice model of domestic air travel… Read More

Sustaining Multimodal Choices: Examining Travel Behavior for Non-work Trips Beyond COVID-19

Yizhao Yang Rebecca Lewis
Abstract Travel by sustainable modes such as public transit, biking, and walking provides positive outcomes for urban residents for the environment and health. Integrating these mode choices into regular travel trips has been challenging for many Americans. The low adoption of sustainable travel modes has been attributed to environmental factors, and to attitudinal and habitual tendencies rooted in an individual’s beliefs and experiences. The proposed project focuses on understanding the… Read More

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