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

ADA Accessible Trail Improvement with Naturally Occurring, Sustainable Materials

Matthew Sleep
Approximately 7,700 years ago—in a cataclysmic event which the Klamath people retold and passed down for over 300 generations—Mount Mazama erupted, forming Crater Lake in Oregon. With molten rock reaching temperatures of up to 2,200 degrees Fahrenheit, complex chemical reactions ensued. The resulting Mazama ash holds some properties that are similar to those in portland cement. Today, most construction projects use portland cement, which takes an excessive amount of energy to create… Read More

Machine Learning and Big Data-Based Approaches for Quality Freeway Volumes

Adrian Cottam
Traffic volumes are essential for the operation of Intelligent Transportation Systems (ITS) and for use in performance metrics for Transportation Systems Management and Operations (TSMO). Maintaining high quality freeway volumes is paramount to ensure that freeway ITS solutions, such as ramp meters, operate smoothly. Furthermore, freeway performance metrics need quality volume data to provide an accurate portrayal of real-world conditions. This dissertation focuses on improving the quality of… Read More