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
Effect of Residential Street Speed Limit Reduction from 25 to 20 mi/hr on Driving Speeds in Portland, Oregon
Christopher Monsere Sirisha Kothuri , Jason Anderson
In 2015, the City of Portland adopted Vision Zero's objective of eliminating transportation-related fatalities and serious injuries. Speed, through analysis of crash data, was determined to be a contributing factor in 47% of the fatal crashes observed in Portland. Thus, one of the pillars in the Vision Zero Action Plan is reductions in motor vehicle speeds. The Portland City Council approved an ordinance reducing the speed limit on all residential streets to 20 miles per hour (mph) in January…
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Framing Livability: A Strategic Communications Approach to Improving Public Transportation in Oregon
Deborah Morrison Autumn Shafer , Rebecca Lewis
Oregon is recognized as a national leader in improving transportation options and limiting urban sprawl. In the 42 years since Senate Bill 100 launched Oregon's land use planning program, these efforts have gone by different names: "reducing reliance on the automobile," "reducing vehicles miles traveled," "reducing greenhouse gas emissions from transportation," "compact, mixed-use, transit-oriented development," "smart growth," "sustainability," and "livability," to name a few. Despite these…
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