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Congestion and travel delay on urban roadways can influence operating costs and service attractiveness. This research uses high resolution bus data to examine sources of delay on urban arterials. A set of tools was created to help visualize trends in bus behavior and movement; this allowed larger traffic trends to be visualized along urban corridors and urban streets. By using buses as probes and examining aggregated bus behavior, contoured speed plots can be used to understand the behavior of roadways outside the zone of influence of bus stops. Speed plots can be utilized to discover trends and travel patterns with only a few days’ worth of data. Congestion and speed variation can be viewed by time of day and plots can help indicate delays caused by intersections, crosswalks, or bus stops. This type of information is important to transit authorities looking to improve bus running times and reliability. Congested areas can be detected and ranked. Speed plots can be utilized to reevaluate bus stop locations, e.g. near-side vs. far-side, and to identify locations where improvement are needed, e.g. queue jump lanes. Transportation agencies can also benefit from this type of information because arterial performance measures are difficult to estimate.

Biographical Information

Travis Glick is a PhD student in Civil and Environmental Engineering at Portland State University. He was born and raised in Chico, California. During high school, he worked for his county government in the prevention unit, planning and leading after-school programs and regional conferences for at-risk youth. Following high school graduation in 2010, he moved to Portland, OR to attend the Portland State University Honors College. Travis's primary research interest is in transportation systems. His current research focuses on utilizing high-resolution archived transit data from Portland’s public transportation provider, TriMet, to create and analyze performance metrics for downtown streets and urban arterials.


Travel time (Traffic engineering), Traffic congestion -- Measurement, Tri-County Metropolitan Transportation District of Oregon


Transportation | Transportation Engineering | Urban Studies

Persistent Identifier

Evaluation of Route Changes Utilizing High-Resolution GPS Bus Transit Data



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