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

Connected Vehicle System Design for Signalized Arterials

Xianfeng (Terry) Yang Mingyue Ji
Now that we are decades into the Age of Information, it's increasingly important to minimize the age of information: that is, to make sure the information we have is the very latest. In the world of connected vehicle technology, Age of Information (AoI) is a concept that was introduced in 2012 to quantify the “freshness” of knowledge about the status of remote systems. The latest NITC report from the University of Utah (UU) offers an innovative way of developing a comprehensive traffic… Read More

Preliminary Analysis of Speed Limit Changes in Eastern Oregon

Christopher Monsere Sirisha Kothuri
This report is the third in a series of reports examining issues in Oregon related to changes in posted speed limits. In 2004, a comprehensive report, “Impacts and Issues Related to Proposed Changes in Oregon’s Interstate Speed Limits1 ,” was prepared. An update to the most important literature in the report was updated in 2017’s “Update to Issues Report for Interstate Speed Changes2 .” Readers are referred to these reports for a review of the scientific literature related to changing speed… Read More