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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

Statistical Inference for Multimodal Travel Time Reliability

Avinash Unnikrishnan Miguel Andres Figliozzi , Subhash Kochar
Travel time reliability – or the consistency and dependability of travel times from day to day, and at different times of day – is a key metric that significantly affects people’s travel behavior. Since businesses rely heavily on transportation systems, an unreliable transportation network can also impact the economic competitiveness of urban areas. As such, reliable travel times are important for transportation agencies to promote economic stability within a community. Having accurate methods… Read More

Understanding Travel Behavior and Accessibility for Older Adults: A Comprehensive Framework

E-Sok Andy Hong Xiaoyue Cathy Liu
Accessibility plays a fundamental role in the day-to-day lives of individuals. However, the COVID-19 pandemic has highlighted the gross inequality in older people’s accessibility to health care and essential services. Months of staying inside, with limited social interactions, reduced opportunities for physical activity, and limited access to health and social care has accelerated the aging process for large numbers of older people and taken a huge toll on their physical and mental health… Read More

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