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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Better Block PSU Gives International School of Portland a Neighborhood Makeover

Aug 28, 2024

Not far from Portland State University, down a little road tucked under three highway overpasses, sits the International School of Portland (ISP)—a leafy four-acre campus serving nearly 400 students from preschool to fifth grade. Despite its proximity to popular pedestrian areas, including the Downtown Waterfront, the International School of Portland is nestled amongst a few private blocks and can be difficult to access by foot or by bike. Naturally, most students arrive by car, which creates the familiar traffic jam at pickup and dropoff times.

To provide more transportation options and give the students more access to the school's surrounding neighborhood, Portland State University students are working to improve walking and biking access to the campus. Championed by ISP’s volunteer Green Team, Facilities Manager...

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Denmark Study Abroad Contextualizes Bicycle Infrastructure for Students

Aug 28, 2024

Since 2011, Portland State University and the Initiative for Bicycle and Pedestrian Innovation have offered a unique opportunity to students: a two-week study abroad course that introduces participants to cities with stellar bike cultures. In past years, classes have explored the Netherlands, Sweden, and Denmark. This year’s class of eight students, led by Hau Hagedorn and Drusilla van Hengel, spent two weeks this summer traversing Denmark by public transportation, foot, and (of course) bike. Check out some photos from the trip.

Students came from all over the country—from Portland to Connecticut—to attend the course. What they all had in common was a desire to learn from a city that is renowned to have some of the best bike infrastructure in the world. The students wanted to bring their newfound knowledge back to their respective towns to make the world a safer, happier place for their loved ones and communities.

Ern Tan—the founder of Civic Cincinnati, a grassroots urbanism advocacy group in Ohio—said before the trip that she was looking forward to seeing the promise of a more bikeable future for Cincinnati reflected in...

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Fall 2024 Graduate Courses in Transportation at Portland State

Aug 27, 2024

Fall classes begin September 30 at Portland State, and there are some exciting transportation courses available this term. Not a current PSU student? You can still take a course: Anyone interested can register for classes through the non-degree application process, as a post-baccalaureate student, or for free if you're a senior citizen. Taking a course can be a good way to see if one of our graduate degree programs is right for you. 

Check out the listings below to see what's on offer this fall.

Urban Studies and Planning (USP)

USP 511 Active Transportation Studio

Instructor: Derek Abe
Delivery: In person,...
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Creating a Statewide Biking and Walking Database for California

Jul 24, 2024

Knowing how many people use walking and bicycling infrastructure is crucial for transportation planning. Active transportation projects can help cities and states achieve multiple climate- and public-health-related targets, and a new project launching in 2024 can help further those goals: California is getting a statewide active transportation count database.

With help from Portland State University (PSU) researcher Sirisha Kothuri, the Safe Transportation Research and Education Center (SafeTREC) at the University of California, Berkeley is leading an effort to create a centralized data repository for the state.

Kothuri, a senior research associate in civil and environmental engineering at PSU, has led multiple research projects aimed at improving the accuracy and scope of nonmotorized data collection efforts. She has experience with using data fusion techniques to estimate bicycle volumes, leveraging crowdsourced data to derive pedestrian counts, and working with this data to make walking and bicycling safer and more comfortable. Her expertise in this area, as well as PSU's experience centralizing transportation data via the university's PORTAL and BikePed Portal, will...

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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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Flying Freight: PSU Researcher Explores Logistics of Drone Deliveries

Jul 24, 2024

Drones, or unmanned aerial vehicles (UAVs), are increasingly being used to deliver medical supplies and other goods. In the U.S., where e-commerce grew by 30% rate in 2020, drone deliveries are expected to become a 7 billion US dollar market by 2027.

Two recent publications by Miguel Figliozzi of Portland State University (PSU) explore different aspects of optimizing and improving upon the use of UAVs for e-commerce deliveries.

Figliozzi is a professor of civil and environmental engineering and a member of the Transportation Research Board on Urban Freight committee, and his main research areas are transportation systems modeling, statistical analysis, and optimization. He has published a number of papers analyzing drone delivery and other areas of freight transportation.

WHAT DO TECHNOLOGICAL IMPROVEMENTS MEAN FOR DELIVERY DRONES?

Though many studies have proposed several different types of models for drones, there is a lack of understanding of the current and future limits of drone technologies for deliveries.

"...

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A Decades-Long Partnership with PSU Helps Metro Guide Investment and Development in the Portland Region

Jul 24, 2024

This year, residents of 37 new apartment buildings in the Portland area are receiving surveys in the mail. The reason? Portland State University researchers are requesting information about how they travel.

Knowing how residents of these high-density affordable and mixed-income housing developments get around town is key to guiding future development in the metropolitan area.

Metro—the regional government of the Portland, Oregon area—strategically invests in transit-oriented development, or TOD, to help more people live in neighborhoods served by high-quality transit. In a partnership going back nearly twenty years, PSU has supported the Metro TOD program by collecting data on residents' travel habits. This latest round of surveys will add to a knowledge base that has been useful for both Metro and PSU, for several reasons.

WHY COLLECT TRAVEL DATA FROM TOD RESIDENTS? 

Using this information, Metro can refine its TOD funding program model to ensure that future developments achieve intended outcomes. 

Patrick McLaughlin, senior development project manager for housing and transit-oriented development at Metro, joined the TOD project in April 2016. Part of his job is to assign gap funding to affordable housing projects...

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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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Transportation Benefit-Cost Analysis: Developing an Oregon-Specific Framework

Jun 20, 2024

Transportation decision-makers typically use benefit-cost analysis (BCA) to evaluate the tradeoffs of transportation projects. However, it is difficult to produce state-specific measures that are multimodal and can consistently evaluate the full range of public and private benefits and costs for Oregonians.

Supported by a $200,000 grant from the Oregon Department of Transportation (ODOT), Jenny Liu of Portland State University will lead a research effort to develop an Oregon-specific, multimodal framework for transportation benefit-cost analysis.

Having a framework specifically tailored to Oregon can help ODOT make informed decisions on infrastructure, policies and support programs based on information about the economic and societal impacts of each transportation mode.

Launched in May 2024, the project, "Mode-Based Benefit-Cost Analysis Calculator" aims to create an easy-to-update Oregon BCA framework to compare transportation benefits and costs for better policy, program, and investment assessments. The research will also develop a methodology that incorporates equity and distributional assessments into the multimodal BCA framework. This will contribute to ODOT’s Strategic...

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