Portland State University

How can emerging data sources most effectively be integrated with traditional sources? A new article in the July 2023 issue of Transportation Research Record: Journal of the Transportation Research Board reports that rather than replacing conventional bike data sources and count programs, old “small” data sources will likely be very important for big data sources like Strava and StreetLight to achieve their potential for predicting annual average daily bicycle traffic (AADBT).

The article, "Evaluating the Potential of Crowdsourced Data to Estimate Network-Wide Bicycle Volumes," was authored by TREC researchers Joe Broach, Sirisha Kothuri and Nathan McNeil of Portland State University along with Md Mintu Miah, Kate Hyun and Stephen Mattingly of the University of Texas at Arlington, Krista Nordback of the University of North Carolina, Chapel Hill; and Frank Proulx of Frank Proulx Consulting, LLC.

Transportation agencies have invested heavily in count infrastructure and models to estimate motor vehicle volumes through networks. Efforts to develop network wide bicycle volume estimates have been hampered by lack of bicycle counters and limited other data sources from which to draw volume estimates. Until recently, most data on bicycle activity came from national or regional household travel surveys, along with observed counts of cyclists—...

Portland State University (PSU) has been awarded a new contract by the National Cooperative Highway Research Program (NCHRP). To create a "Guide for Addressing Encampments on State Transportation Rights-of-Way," $350,000 in research funding will go toward developing a set of best practices to help state transportation agencies respond to temporary encampments on state transportation rights-of-way. These areas, including paved roads, bridges, and other transportation facilities managed by the state, are often some of the most accessible public land for people to occupy who have nowhere else to go.

A growing trend of encampments on state rights-of-way has presented unprecedented challenges for state departments of transportation (DOTs) in the design, construction, and maintenance of transportation facilities. As owners of some of the largest stretches of public land, DOTs must maintain the land for public use, and may lack resources to address the social welfare aspects of this stewardship. There are no widely accepted guidelines relating to this trend. By supporting this research, the NCHRP aims to help state DOTs respond to encampments in a way that assures rights-of-way remain open while...

In the 1970's, Portland had a dream: to create a "pleasurable human environment" by giving space to people rather than cars. Several car-free areas were identified in the city's ambitious 1972 Downtown Plan, approved by city council at the time.

Four Portland State University (PSU) students took that dream a little further this year. In the Fall 2022 term, Cameron Bennett, Owen Christofferson, Emily D’Antonio and Aidan Simpson created a Downtown Portland Living Streets Plan centered around a new street typology for Portland: Living Streets.

Like the public plazas common in cities outside the US, living streets are defined by slow speeds and shared space. But unlike European old towns, Dutch Woonerfs or Barcelona's Superblocks, Living Streets were designed specifically with Portland in mind. Bennett describes them as "a pedestrian-focused equivalent to the neighborhood greenways in Portland: Not explicitly car-free, but kind of...

Hau Hagedorn, associate director of the Transportation Research and Education Center (TREC) at Portland State University, is part of an interdisciplinary team of educators who will travel to Vietnam and Hawaii this year looking for new curriculum, research and study abroad opportunities.

After more than a decade of organization and effort, PSU is establishing a Pacific Islander & Asian American (PIAA) Studies Program, and now a grant from the Henry Luce Foundation is supporting the exploratory trip by Hagedorn and two co-leaders—Marie Lo, professor and chair of English, and Betty Izumi, professor of public health and interim associate dean for students and alumni affairs in OHSU-PSU's School of Public Health—who each bring different perspectives and academic backgrounds to the work. Read more about the project in a PSU news story by Cristina Rojas, Communications Manager of PSU's College of Liberal Arts and Sciences: Grant Makes Exploratory Trips To Vietnam, Hawaii Possible For Piaa Studies.

"This grant provides an opportunity to explore the influence of colonialism on transportation and mobility. The unintended...