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

Using Time-Series Analysis to Precisely Identify and Rank Road Hotspots

Alexander Lee Wei Lin
Over the past decades, many ranking methods have been proposed. However, results vary from method to method, and one of the issues behind ranking is the element of subjectivity. One approach to resolve these issues is the use of combined models. One of the combined models is the Enhanced Empirical Bayesian (EB) method that incorporates the use of the similarity measure based on the Proportion Discordance Ratio (PDR). This model is developed to assess and objectively quantify similarity among… Read More

A Proactive Approach to Examining Transportation Safety and Equity

Aaron Golub
The PSU team will be a core contributor to the literature review focused on equity analysis approaches and best practices. This contribution will complement the expertise on safety and geographical analysis brought to the project from other team members. Read More