Urban Studies Commons^™

Short-Term And Long-Term Effects Of New Light Rail Transit Service On Transit Ridership And Traffic Congestion At Two Geographical Levels, Huajie Yang

Dissertations and Theses

This dissertation quantitatively examines the effect of new Light Rail Transit (LRT) services on transit ridership and traffic congestion over time at two different geographical levels: at the corridor level, this study conducts case studies of two LRT lines in the Portland, Oregon region; at the regional level, this study uses a synthetic control method to construct a "synthetic" control Urbanized Area (UA) that closely approximates the counterfactual transit ridership and traffic congestion scenario in the absence of light rail project in three UAs across America. The results of the corridor-level study suggest that both LRT lines increased transit ridership …

Bi-Objective Optimization For Battery Electric Bus Deployment Considering Cost And Environmental Equity, Xiaoyue Cathy Liu, Yirong Zhou, Ran Wei, Aaron Golub, Devin Macarthur

TREC Final Reports

Public transit, compared with passenger cars, can effectively help conserve energy, reduce air pollution, and optimize flow on roadways. In recent years, Battery Electric Bus (BEB) is receiving an increasing amount of attention from the transit vehicle industry and transit agencies due to recent advances in battery technologies and the direct environmental benefits it can offer (e.g., zero emissions, less noise). However, limited efforts have been attempted on the effective deployment planning of the BEB system due to the unique spatiotemporal features associated with the system itself (e.g., driving range, bus scheduling). In this project, we developed an innovative spatiotemporal …

Rethinking Streets For Physical Distancing, Marc Schlossberg, Rebecca Lewis, Aliza Whalen, Clare Haley, Danielle Lewis, Natalie Kataoka, John Larson-Friend

TREC Final Reports

This report summarizes the primary output of this project, a book of COVID-era street reconfiguration case studies called Rethinking Streets During COVID-19: An Evidence-Based Guide to 25 Quick Redesigns for Physical Distancing, Public Use, and Spatial Equity. COVID-era needs have accelerated the process that many communities use to make street transformations due to: a need to remain physically distanced from others outside our immediate household; a need for more outdoor space close to home in every part of every community to access and enjoy; a need for more space to provide efficient mobility for essential workers in particular; and a …

Transit Impacts On Jobs, People And Real Estate, Arthur C. Nelson, Robert Hibberd, Kristina Marie Currans, Nicole Iroz-Elardo

TREC Final Reports

This is the first volume of a five-volume set of publications comprising the report titled “Transit Impacts on Jobs, People and Real Estate.” It is the culmination of four research projects funded by the the National Institute of Transportation and Communities (NITC), a US DOT funded National University Transportation Center. This volume includes a preface that review key findings of the prior four research grants, an executive summary that reviews key findings of all five volumes of the current report, the context that reviews the context of the present research including details on more than 50 fixed route transit systems …

Cost Of Oregon Evictions Report, Lisa K. Bates, Marisa Zapata, Jacen Greene, Stefanie Knowlton

Homelessness Research & Action Collaborative Publications and Presentations

A new report from Portland State University’s Homelessness Research & Action Collaborative (HRAC) estimates that evictions could cost Oregon as much as $3.3 billion after the statewide eviction ban expires in June.

The center worked with community partners to gather data from emergency shelters, inpatient and emergency medical services, child welfare, and juvenile justice services to estimate the downstream costs of evictions using the Cost of Eviction Calculator developed by the University of Arizona College of Law.

The center’s cost calculation is an estimate of the scale of the crisis that Oregon could face without additional eviction interventions. It does …

Webinar: Land Use And Transportation Policies For A Sustainable Future, Liming Wang

TREC Webinar Series

Even though there are tremendous uncertainties in the timing and evolution path of the Autonomous Vehicles (AV) technology, it may become a likely reality within most MPOs' long-range regional transportation plan horizon of twenty years. Yet a recent survey of the largest MPOs in the US indicates only one of them "even mentions driverless, automated, or autonomous vehicles in its most recent RTP". One of the uncertainties in assessing the impacts of AV is their direction: on one hand, self-driving cars could increase VMT by increasing roadway capacity, lowering costs of travel; on the other, they may reduce VMT by …

Webinar: Transportation Benefits Of Polycentric Urban Form, Reid Ewing, Sadegh Sabouri

TREC Webinar Series

A “polycentric” region consists of a network of compact developments connected with each other through high-quality transportation options. Rather than continuing the expanse of low-density development radiating from an urban core, investments can be concentrated on central nodes and transit connections. This development pattern is very popular in Europe and is linked to significant benefits. This presentation is aimed at exploring the academic literature and empirical evidence surrounding polycentric development, analyzing more than 120 regional transportation plans to see how they promote polycentric development, defining types of centers in a hierarchy of centers, quantifying the transportation benefits of polycentric development, …

Applying Data-Driven Multimodal Speed Management Strategies For Safe, Efficient Transportation, Yao-Jan Wu, Xianfeng Yeng, Sirisha Kothuri

TREC Project Briefs

How can we use a variety of data-driven speed management strategies to make transportation safer and more efficient for all modes–whether you’re driving, walking or taking transit? The project was led by Yao Jan Wu, director of the Smart Transportation Lab at the University of Arizona. Co-investigators were Xianfeng Terry Yang of the University of Utah, who researches traffic operations and modeling along with connected automated vehicles, and Sirisha Kothuri of Portland State University, whose research has focused on improving signal timing to better serve pedestrians. “We want to improve mobility for all users, be it pedestrians, vehicle drivers or …

Difference In Travel Behavior Between Immigrants In The U.S. And U.S. Born Residents: The Immigrant Effect For Car-Sharing, Ride-Sharing, And Bike-Sharing Services, Sangwan Lee, Michael J. Smart, Aaron Golub

Urban Studies and Planning Faculty Publications and Presentations

Understanding immigrants’ travel behavior is important to transportation planners and policymakers working to implement better transportation planning and public policies to serve those needs. The recent changes to the transportation system, specifically, the recent emergence of shared mobility services, such as car‐sharing, ride‐ sharing, and bike‐sharing, may have resulted in changes in how immigrants travel. Thus, we explored two research questions: (1) whether immigrants in the U.S. are more likely to rely on the three newly emerging transportation modes than US‐born persons, and (2) whether the assimilation theory can be applied to the modes. To answer these questions, we used …

Data Files: Bi-Objective Optimization For Battery Electric Bus Deployment Considering Cost And Environmental Equity, Xiaoyue Cathy Liu, Yirong Zhou, Ran Wei, Aaron Golub

TREC Datasets and Databases

This data supports the research project Bi-objective Optimization for Battery Electric Bus Deployment Considering Cost and Environmental Equity and a final report published on NITC’s website.

Dataset collected through multiple sources and organized into different formats including CSV format, JSON format, shapefile and code repository.

Context: The research project develops a bi-objective model that aims to help transit agencies to optimally deploy BEB while considering both capital investment and environmental equity. The unique spatio-temporal characteristic of BEB system, charging limitations (on-route and in-depot charging), and operational constraints are also considered and incorporated into the model.

Integrating Diverse Perspectives For Managing Neighborhood Trees And Urban Ecosystem Services In Portland, Or (Us), Lorena Nascimento, Vivek Shandas

Urban Studies and Planning Faculty Publications and Presentations

Municipalities worldwide are increasingly recognizing the importance of urban green spaces to mitigate climate change’s extreme effects and improve residents’ quality of life. Even with extensive earlier research examining the distribution of tree canopy in cities, we know little about human perceptions of urban forestry and related ecosystem services. This study aims to fill this gap by examining the variations in socioeconomic indicators and public perceptions by asking how neighborhood trees and socioeconomic indicators mediate public perceptions of ecosystem services availability. Using Portland, Oregon (USA) as our case study, we assessed socioeconomic indicators, land cover data, and survey responses about …

Model-Based Estimates Of Population Of Oregon Census Blocks As Of April 1, 2020, Population Research Center, Portland State University

Publications, Reports and Presentations

The methodology used to produce population estimates as of 4/1/2020 for the state at the block group level relies on data from the 2010 Census Summary File 1 (SF1), 2020 Census Apportionment Results, US Census partnership programs supporting the 2020 Census, 2020 Tiger/Line boundary files, 2015-2019 5-year American Community Survey (ACS) files, ESRI Updated Demographics vintage 2020, and estimates from the Portland State University Population Research Center and US Census Population Division.

The 2010 decennial census block file was the baseline for average household size, and counts of housing units and population by race in 2010. Block group or tract …

Evaluating The N/Ne Preference Policy, Amie Thurber, Lisa K. Bates, Susan Halverson

School of Social Work Faculty Publications and Presentations

North/Northeast Portland has long been the heart of Portland's Black community. By 2010, the area had lost two-thirds of its Black residents to displacement. In response, the City adopted a Preference Policy that prioritizes displaced affordable rental and homeownership applicants. This report describes findings from the first phase of a study to understand what difference this policy is making in the lives of residents.

The Long-Haul: Buddhist Educational Strategies To Strengthen Students’ Resilience For Lifelong Personal Transformation And Positive Community Change, Namdrol Miranda Adams, Kevin Kecskes

Public Administration Faculty Publications and Presentations

For decades, community engagement scholars have built a robust body of knowledge that explores multiple facets of the higher education community engagement domain. More recently, scholars and practitioners from mainly Christian affiliated faith-based institutions have begun to investigate the complex inner world of community-engaged students’ meaning-making and spiritual development. While most of this fascinating cross-domain effort has been primarily based on “Western” influenced Judeo-Christian traditions, this study explores service-learning/community engagement themes, approaches, rationale, and strategies from an “Eastern” perspective based on the rich tradition of Tibetan Buddhism. This case study research focuses on curricular approaches, influences, and impacts of Buddhist …

The Electronic Hardware Music Subculture In Portland, Oregon, James Andrew Hickey

Dissertations and Theses

Music is relatively understudied as a geographic phenomenon, but recently there has been a shift in academic literature to understand the social, cultural and economic factors that determine music and its development in specific places. The purpose of this study is to examine the Electronic Hardware Music Subculture (EHMS) in Portland, why it thrives, and how it is linked to the local cultural economy. To do this, I used semi-structured, long form interviews with key members of the EHMS. These interviews, and my own observations, gave insight into what factors affect the success of members of the EHMS, and how …

Winning The Fight For Better Bus Service, Steven Higashide

PSU Transportation Seminars

The "right to the city" depends on the right to access the city, and U.S. regions are marked by profoundly unequal access. One of the clearest manifestations of this is the state of U.S. bus transit. Bus service is simple to improve and has vast potential to better people's lives, but has been constrained by the racist planning and politics that shape every American city.

How can we fulfill the promise of better buses and create abundant transit networks that expand access to opportunity? In this seminar, Higashide unpacks the elements of effective bus service – and cites examples from …

What Do People Experiencing Homelessness Need?, Marisa Zapata

Homelessness Research & Action Collaborative Publications and Presentations

This is an opinion piece about a survey in Portland that reveals profound racial disparities even in basic answers about where people sleep.

Racial Disparities In Traffic Enforcement, Mike Dolan Fliss

PSU Transportation Seminars

Law enforcement traffic stops are one of the most common entryways to the US justice system, with significant downstream impacts for both individuals and communities. Group-specific rates are typically based on jurisdiction resident populations; these rates, like many justice-system indicators, demonstrate race-ethnicity disparities. Residential-based rates implicitly assume race-ethnicity groups have equal vehicle access, equal driving volume, and that all driving occurs in resident’s jurisdictions. In contrast, surveys suggest Black non-Hispanic and Hispanic households have less access and drive less than white non-Hispanic households. Models incorporating US Census data and race-ethnicity driving factors from the 2017 National Household Travel Survey showed …

Curating Equitable Transportation, Nikotris Perkins

PSU Transportation Seminars

Getting people and goods from here to there is central to the ways we live, work, and play in the United States. The transportation networks we create as planners, engineers, geologists, contractors, consultants, advocates, and citizens involve a multitude of decisions. These decisions have great impact on who can get where, when and how; often connected to our structures of social power. This seminar connects those dots, questions our ability to make change, and calls participants to be actively involved in a transportation system that is curated for those it targets: everyone.

Webinar: Bus Stops: Access And Equity, Keith Bartholomew

TREC Webinar Series

Improving bus stops by providing shelters, seating, signage, and sidewalks is relatively inexpensive and popular among riders and local officials. Making such improvements, however, is not often a priority for U.S. transit providers because of competing demands for capital funds and a perception that amenities are not tied to measurable increases in system effectiveness or efficiency. This webinar focuses on the role that bus stops play as the point of first contact between transit agencies and their potential riders, and how the quality of that contact can influence both ridership and accessibility for riders with mobility-related disabilities. The webinar will …

At The Intersection Of Safety + Race + Transportation, Charlene Mcgee

PSU Transportation Seminars

Transportation policies at the local, regional, state and national levels have a direct impact on urban land use and development patterns. Transportation intersects with multiple areas including public health, education, climate change, physical activity, health outcomes, build environment, violence, safety, social cohesion and the wellness of communities. For the health outcomes influenced by transportation, disparities exist by race, ethnicity, and socioeconomic status in Multnomah County. Disproportionate exposure to injury, air pollution, and noise contributes to inequitable burdens of injuries and chronic disease among race and ethnic groups. This is exacerbated by lack of access to safe places for active transportation …

Incorporating Local Foods Into Low-Income Families’ Home-Cooking Practices: The Critical Role Of Sustained Economic Subsidies, Jennifer Gaddis, Amy K. Coplen, Molly Clark-Barol, Allea Martin, Claire K. Barrett, Lauren Lubowicki

Urban Studies and Planning Faculty Publications and Presentations

Alternative food practices, including farmers markets and CSAs, are often inaccessible to lowincome families. Subsidized CSAs and fruit and vegetable prescription programs have the potential to decrease food insecurity, increase fresh fruit and vegetable consumption, and generate better health outcomes. However, several challenges can limit logistics of distribution and an inability to cook from scratch due to a lack of kitchen infrastructure, time, or skills. In this paper, we investigate two dietrelated health programs conducted with community partners in Madison, Wisconsin, and Portland, Oregon. We used photovoice to evaluate and enhance these programs, which supplied lowincome participants with free or …

Bus Stops Improvements Along Utah Corridor Increase Ridership And Ada Accessibility, Keith Bartholomew

TREC Project Briefs

A bus stop can be anything from a simple signpost stuck in the grass, to a comfortable shelter with seating and paved access to the sidewalk. For many U.S. transit agencies across the country, improving facilities at bus stops is a priority. But how much do these improvements actually affect ridership? A lot, it turns out. A new NITC study, co-funded by the Utah Transit Authority (UTA) and led by Keith Bartholomew of the University of Utah, found a 5.9% increase in boardings after improvements were made to a series of bus stops in Salt Lake City - compared to …

Biking While Black: How Planning Contributes To Unjust Policing, Jesus Barajas

PSU Transportation Seminars

Neighborhoods of color tend to be the most dangerous places for cyclists and other road users, a result in part of historic disinvestment and failure to provide basic infrastructure. Safety efforts to reduce crashes, like Vision Zero, have called for both increased investment, a qualified benefit for disenfranchised communities, and increased traffic enforcement, a response that is likely to place people of color in even greater harm based on extensively documented police injustice.

• For more about the problems of policy and planning around 'bicycling while black,' check out a Sept 9, 2020 blog post by Jesus Barajas.

To what …

Webinar: Economic And Business Outcomes Of Bicycle And Pedestrian Improvements, Jenny H. Liu

TREC Webinar Series

The National Street Improvements Study, conducted by PSU in conjunction with PeopleForBikes and consulting firm Bennett Midland, researched the economic effects of bicycle infrastructure on 14 corridors across six cities — Portland, Seattle, San Francisco, Memphis, Minneapolis and Indianapolis. The study found that improvements such as bicycle and pedestrian infrastructure had either positive or non-significant impacts on the local economy as measured through sales and employment. In this webinar, lead researcher Jenny Liu will share the results of the investigation and the unique methodology for investigating these economic outcomes.

This webinar is based on a study funded by the …

Data Files: The Role Of Bus Stop Features In Facilitating Accessibility, Keith Batholomew, Ja Young Kim, Divya Chandrasekhar, Reid Ewing, Arlie Adkins, Samuel Jensen

TREC Datasets and Databases

These datasets support a final report published on NITC’s website “The Role of Bus Stop Features in Facilitating Accessibility”: https://nitc.trec.pdx.edu/research/project/1214.

The DOI for the final report is: https://dx.doi.org/10.15760/trec.254.

Regional Transportation Goals: Reducing Sprawl Through Interconnected Centers, Reid Ewing

TREC Project Briefs

A “polycentric” region is a network of compact developments (centers) that are connected with each other through high-quality transportation options. As the antidote to sprawling suburbs, compact centers can encourage all the things that sprawl discourages: public health, environmental sustainability, social cohesion, and economic diversity. But how can metropolitan planning organizations ensure that their regional plans will actually meet these goals? Polycentric development has been advocated by urban and transportation planners for more than a decade. However, effective practice must be backed by solid research, and to date there has been little or no research that quantifies the transportation benefits …

Reducing Vehicle Miles Traveled, Encouraging Walk Trips, And Facilitating Efficient Trip Chains Through Polycentric Development, Reid Ewing, Keunhyun Park, Sadegh Sabouri, Torrey Lyons, Keuntae Kim, Dong-Ah Choi, Katherine Daly, Roya Etminani Ghasrodashti

TREC Final Reports

Compact development can result in many benefits for communities and residents. Areas can connect compact developments through high-quality transportation options, creating a network of centers, or a “polycentric” region. This development pattern is very popular in Europe and is linked to significant benefits. Salt Lake County has organically developed several small centers, and with the right strategies could continue to fuel this kind of growth. The metropolitan planning organization (MPO) for the region, the Wasatch Front Regional Council, has been planning for polycentric development since the Wasatch Choice for 2040 Vision was released in 2010. Our research is aimed at …

The Role Of Bus Stop Features In Facilitating Accessibility, Keith Bartholomew, Ja Young Kim, Divya Chandrasekhar, Reid Ewing, Arlie Adkins, Samuel Jensen

TREC Final Reports

Although transit decision-makers and riders generally favor improving bus stops by adding shelters, benches, and similar features, it is unclear the impact such features have on transit demand and there has been little research that measures these impacts. This study examines the link between stop improvements and changes in stop-level boardings on scheduled-service buses and in ADA paratransit demand in the Salt Lake City, UT, metropolitan area between 2014 and 2017. The study also investigates current bus stop improvement practices of leading transit agencies nationwide. The study uses a number of quantitative and qualitative techniques, including propensity score matching, propensity …

Webinar: A National Scan Of Bike Share Equity Programs: Best Practices And Lessons Learned, Nathan Mcneil, John Macarthur, Adriel Thornton

TREC Webinar Series

Connecting with cities and bike share operators from across the United States, Portland State University conducted a nationwide scan on what programs and initiatives were running to address equity in bike share. The report “National Scan of Bike Share Equity Programs” documents responses from over 70 bike share systems. This resource will help cities and operators navigate the range of actions that have been implemented to make bike share systems more equitable, examine successful strategies employed across the U.S., and understand how those successes (and challenges) are being measured and articulated. In doing so, we hope the report helps bike …