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

Encouraging Low-Income Households to Make Location-Efficient Housing Choices

Andree Tremoulet
The purpose of this project is to develop and evaluate tools to assist Housing Choice Voucher (HCV) program participants in the Portland, OR, metro region with considering transportation needs and options when making decisions about where to live. The project consists of two elements: development of a set of tools in collaboration with the four metro-area housing authorities, and an evaluation of the effectiveness of the tools. The four housing authorities conceptualized and initiated this… Read More