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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

Exploring the positive utility of travel and mode choice

Patrick Singleton
Traditionally, travel is considered a disutility to be minimized, and travel demand is derived from activity demand. Recently, scholars have questioned these axioms, noting that some people may like to travel, use travel time productively, find other benefits in traveling, or travel for non-utilitarian reasons. These are instances of “the positive utility of travel” (PUT). In this dissertation, I conceptually and empirically investigate PUT, its determinants, and its impacts on travel behavior… Read More

Trip and Parking Generation at Transit-Oriented Developments

Reid Ewing
The decision of how best to allocate land around transit stations is a debated topic, with transit officials often opting for park-and-ride lots over active uses such as multifamily housing, office, and retail organized into transit-oriented developments (TODs). In practice, guidelines for providing parking and mitigating vehicle trips come mainly from the Institute of Transportation Engineers (ITE) Trip Generation Manual and the ITE Parking Generation Manual. However, both manuals have well… Read More

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