Integrating Socioeconomic Vulnerability Into Resilient Infrastructure Planning

Sep 23, 2024

Transportation networks are a vital lifeline essential to the functionality of modern society. A newly published research report offers a new methodology for assessing transportation network vulnerability and resilience, with a particular focus on incorporating social vulnerability into the analysis.

Why? Vulnerable populations—such as people with low income, minorities, or seniors—could suffer higher levels of adverse impacts from disruptions. Road closures and other transportation network interruptions due to earthquakes, floods or other disasters may disproportionately affect these groups of people.

The research project, "Integrate Socioeconomic Vulnerability for Resilient Transportation Infrastructure Planning," by Liming Wang, John MacArthur, and Yu Xiao of Portland State University (PSU), addresses a critical gap by integrating socioeconomic vulnerability indicators into the evaluation of transportation infrastructure vulnerabilities.

The report demonstrates this novel methodology using the Portland, Oregon metropolitan area as a case study.

WHAT DOES THE METHODOLOGY OFFER?

The new methodology proposed by the research team combines spatial analysis, network modeling, and social vulnerability indices to identify critical links in the transportation system. It assesses the impact of potential disruptions on accessibility to...

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NITC Dissertations Explore Perceived Safety, Machine Learning and Crash Data

Sep 23, 2024

Three dissertations supported by funding from the National Institute for Transportation and Communities (NITC) take on different transportation challenges, exploring ways to improve safety and connectivity in communities. Farzin Maniei, Adrian Cottam, and Kyu Ri Kim all completed their doctoral research with support from the NITC program. Read on to learn more about each of their projects.

Adrian Cottam, University of Arizona

Machine Learning and Big Data-Based Approaches for Quality Freeway Volumes

"If you boil it down, the whole purpose of my dissertation is to take existing resources that DOTs have, and try and make better use of them. For example, the Arizona Department of Transportation has loop detectors, but only in the Phoenix region. So it's a very small area out of the total...

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How "Perceived Safety" Plays A Central Role In Improving The Walking Environment

Jul 24, 2024

When Kyu Ri Kim was seven years old, she was struck by a car while walking in her neighborhood where there was no separate walkway for pedestrians in Seoul, South Korea.

Kim, who is now an adjunct research associate at Portland State University (PSU), received nerve damage in her legs and had to use a wheelchair for several days after the incident. This experience launched her interest in pedestrian safety, which eventually led to her 2024 doctoral dissertation research project: "The Central Role of Perceived Safety in Connecting Crash Risk Factors and Walking Behavior."

"That was the real starting point, my personal experience. And I'm curious whether other people really do understand the real risk around them. What are the crash risk factors around them and how are they different from individual perceived risk?" Kim said.

Her dissertation, supported by funding from the National Institute for Transportation and Communities (NITC), illuminates the relationship between pedestrian crash risk factors and perceived safety, as well as the relationship between safety attitudes and walking behavior. How the interplay between these factors influences people's behavior...

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TREC Director Jennifer Dill Named Editor-in-Chief of Transportation Research Record

Jun 25, 2024

Jennifer Dill, director of Portland State University's Transportation Research and Education Center (TREC), has been named the inaugural editor-in-chief of the Transportation Research Record (TRR). The TRR—the flagship journal of the National Academies of Sciences, Engineering, and Medicine’s Transportation Research Board (TRB)—is one of the most cited and prolific transportation journals in the world, offering wide coverage of transportation-related topics.

While maintaining her current role as the director of TREC, Dill will begin her duties at TRR on July 15, collaborating with the TRR team and TRB volunteers to enhance the journal’s role in improving the nation's transportation system through high-quality research.

"The Transportation Research Record and TRB have played key roles in my scholarly and professional career. My very first peer-reviewed journal article was published in TRR based on research I did as an undergraduate student with my mentor, Dr. Dan Sperling. That opportunity opened my eyes to the possibility of being a researcher and professor," Dill said.

Prior to entering academia, Dill worked as an environmental and transportation planner at the federal and regional levels. When she first...

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What's new in Transportation Data at PSU? Updates on PORTAL and BikePed Portal

Mar 20, 2024

Portland State University's Transportation Research and Education Center (TREC) maintains two large, public transportation data lakes: PORTAL and BikePed Portal. The latest round of funding for PORTAL, in the amount of $1.6 million, was awarded in February 2024 and will cover PORTAL's activities through the next five years. BikePed Portal, too, recently received $100K for another year of funding, and both are the focus of some exciting innovations in transportation data.

The two centralized data repositories, unique both in their size and in the fact that they are accessible (PORTAL is freely available to the public, and BikePed Portal has limited public access as well), are supported by multiple federal, state, and regional agencies. Federal funding for PORTAL comes from the Federal Highway Administration (FHWA)'s Surface Transportation Block Grant (STBG) funding, suballocated by Metro’s ...

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How Better Block PSU Helped Launch the Steel Bridge Skatepark

Feb 13, 2024

Portland's Old Town neighborhood is getting a new skatepark, and a team of PSU transportation students were instrumental in bringing the project from idea to reality. 

Given the project of activating a vacant lot on the west side of the Steel Bridge by transforming it into a community skatepark, students in the Spring 2023 bike-pedestrian planning class created a set of design options, a weighted decision matrix, and a memorandum of existing conditions for the site. They also developed performance measures to determine how best to meet the project's objectives of activating the space, creating a welcoming environment, and stimulating local business activity.

Their work provided a basis for ongoing conversations with stakeholders around the project, which ultimately resulted in a green light: Funding for the new skatepark was announced in January by Commissioner Dan Ryan, who oversees Portland Parks & Recreation. Work is slated to begin this spring on property acquisition, community engagement and design of the 35,000 square foot facility.

"Getting to see this skatepark regularly...

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Transforming the School Commute: PSU Researchers Explore the Impact of Bike Buses

Jan 18, 2024

The trip to and from school is made by nearly every child in Oregon every school day. Bike and walk buses, organized groups of school children, parents, and ride/walk leaders, seek to encourage biking and walking to school. A new research project at Portland State University's Transportation Research and Education Center (TREC) will gather information on bike buses nationwide, inspired by the success of Sam Balto's bike bus initiative at Alameda Elementary School in Portland, Oregon.

Balto, a physical education teacher, catapulted into the limelight in 2022 after establishing a weekly bike bus involving over 100 students commuting to school on two wheels. Its success and popularity prompted a broader initiative to understand and promote the benefits of bike and walk buses across the United States.

Researchers John MacArthur and Nathan McNeil, along with Evan Howington, a student in the Master of Urban and...

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The NITC Guide to the 2024 Transportation Research Board (TRB) Annual Meeting

Dec 20, 2023

The 103rd annual meeting of the Transportation Research Board (TRB) will be held January 7–11, 2024 in Washington, D.C., and NITC transportation faculty and researchers will be sharing their expertise at the world's largest transportation conference. The TRB annual meeting attracts thousands of transportation professionals from around the globe to address transportation policy, practice, and plans for the future.

Below are a few highlights of research being presented by transportation experts from our participating NITC-funded campuses: Portland State University (PSU), University of Oregon (UO), University of Utah (UU), University of Arizona (UA), and University of Texas at Arlington (UTA). Check out our full NITC guide for all of the sessions:

VIEW THE ONLINE GUIDE TO NITC AT TRB 2024

*Due to the evolving status of speaker attendance and TRB programming, please check your TRB schedule for the most current information in the event of changes.*

NITC Research Highlights at TRB 2024

University of Texas at Arlington

Monday, January 8 - Older Adults, Travel Options, and Barriers to Accessibility

In this lectern session, Juana Perez, Mohammad Rashidi, Jobaidul Boni and Kate Hyun of the University of Texas, Arlington...

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Eisenhower Fellowships Awarded to Eleven NITC Transportation Students

Dec 20, 2023

Eleven students attending partner universities of the National Institute for Transportation and Communities (NITC) are receiving Eisenhower Fellowships presented by the U.S. Department of Transportation at this year's annual meeting of the Transportation Research Board (TRB). Meet this year's NITC Eisenhower Fellows:

Ashley (Ash) Avila, University of Arizona

Ash Avila is a graduate student in the Accelerated Master’s Program in Urban Planning at the University of Arizona with a focus on transportation and environmental planning. She is currently a graduate research assistant studying the effects of heat and other weather patterns on travel behavior as part of a larger ... Read more

Transportation Academy Researchers Win Charley V. Wootan Award

Dec 18, 2023

Nathan McNeil, a Research Associate at PSU's Transportation Research and Education Center (TREC), and co-authors Keith Bartholomew and Matt Ryan (University of Utah), have been selected for a Charley V. Wootan Award for their paper "Transportation Academies as Catalysts for Civic Engagement in Transportation Decision-making." They will be presented with the award in January at the annual meeting of the Transportation Research Board (TRB).

The paper, published in Transportation Research Record (TRR): The Journal of the Transportation Research Board, draws on findings from a project funded by the National Institute for Transportation and Communities (NITC), with additional support from Salt Lake City Transportation Division; Wasatch Front Regional Council; Utah Department of Transportation; Utah Transit Authority; University of Utah; Salt Lake County, Regional Planning and Transportation; and the Portland Bureau of Transportation. Read more about the project: Launching the Wasatch Transportation Academy.

The article will also appear in a promotional issue of the TRR journal, physical copies of which will be available in the TRB Annual Meeting Exhibitor Hall in Washington, D.C. during the annual meeting. Stop by the TRR Journal booth for a copy.

The...

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