Urban Studies and Planning Commons^™

Key Points In Preparation For Oregon Legislative Session (2024): Examining The Multifaceted Impacts Of Drug Decriminalization On Public Safety, Law Enforcement, And Prosecutorial Discretion, Kelsey S. Henderson, Christopher Campbell, Brian Renauer

Criminology and Criminal Justice Faculty Publications and Presentations

These findings are part of a 3-year study to examine the impacts of possession of PCS law changes on: (1) law enforcement discretion, (2) prosecutorial decision-making, (3) courts/sentencing, and (4) public safety. The key findings, unless noted, represent statewide trends and impacts. Prior to M110, other statewide changes in policy, law, and historical events such as the COVID-19 lockdown/court backlog and public defense crisis also had important impacts on enforcement, prosecution/sentencing, and public safety outcomes. As such, data collected during the early implementation of M110 is not likely a reliable predictor of its ultimate impact. The data reported on below …

Driving The Future: Intersection Of Emerging Transportation Technologies And Energy Consumption, Tanmoy Bhowmik

PSU Transportation Seminars

The world of transportation is in a constant state of evolution, with emerging technologies offering greater efficiency and safety in our daily lives. However, these innovations at the same time also have far-reaching impacts on energy sectors. The rise of electric and autonomous vehicles is set to quickly transform the residential energy consumption pattern. A critical question to consider is: “How can we ensure that our energy infrastructure is ready to meet the changing demands”. To adequately prepare for this transformation, this study attempted to gain insight into the future energy pattern under different scenarios.

Oregon Transportation Plan: Innovations In The Exploratory Scenario Planning Approach, Adam Argo, Jonathan Slason

PSU Transportation Seminars

This seminar reviews the recently-adopted Oregon Transportation Plan and the process and innovations that underpinned the analysis to identify a preferred set of investments and actions to support the vision and goals of the plan. The plan used innovative methods for communicating how investment strategies may affect regions or example households across the state. Funding is a key influence on how the plan by identifying the affects of inadequate funding and identifying how investment priorities change if funding increases. The Statewide VisionEval strategic travel model was used to conduct an exploratory scenario planning process that informed the relationships between funding, …

Active Transportation Counts From Existing On-Street Signal And Detection Infrastructure, Sirisha Kothuri

PSU Transportation Seminars

The goal of agencies is to provide a safe and reliable multimodal transportation system that connects people and helps communities and economy thrive. In order to fulfill this mission, it is important to have a robust understanding of the usage of each mode within the system as well as the linkages between modes. Currently there is no systemic accounting of pedestrian traffic across the transportation network, making it difficult to understand systemic crash safety and prioritize projects. Analysts must rely on imperfect proxies such as land use density, race, income, and transit usage in the absence of measured pedestrian traffic …

Webinar: Understanding Connections Between Mobility, Transportation, And Quality Of Life In Refugee Communities In Tucson, Arizona, Orhon Myadar

TREC Webinar Series

While resettlement typically allows millions of forcibly displaced persons to escape from unpredictable and often dangerous conditions of displacement, most refugees experience an array of challenges after resettlement as they integrate into new communities. Many of these challenges are related to their ability to get to and from places that are important to their sense of autonomy and well-being, including sites of education, employment, worship and medical care. In this talk, Dr. Myadar will present some of the key findings of her collaborative research project on mobility-related challenges faced by refugees in Tucson, Arizona after their resettlement. This webinar is …

Trimet & Tod – Opportunities For Growth, Miles Anderson, Fiona Lyon

PSU Transportation Seminars

Staff of the Tri-County Metropolitan Transportation District of Oregon (TriMet) will present TriMet's recently published Regional Transit-Oriented Development (TOD) plan, explaining its inception, creation, and delivery. The team will explain how the plan fits within a hierarchy of regional and sub-regional plans and how it delivers transparency to TriMet's TOD program, enabling all stakeholders to participate. Current TOD project examples will be showcased to demonstrate how partnerships can enhance project outcomes and indicate how stakeholders from various backgrounds can influence projects.

Transportation Planning In An Aging Society, Shengxiao (Alex) Li

PSU Transportation Seminars

By 2030, all Baby Boomers (those born between 1946 and 1964) will be 65 and older in the U.S. However, the understanding of how Baby Boomers travel differently from the previous generations, and the opportunities and challenges of older people's travel, do not keep pace with the increasing number of older people. This presentation starts with an overview of transportation policies for older people and challenges, followed by several empirical studies investigating older people's generational travel differences, vehicle ownership over the life course, and the interaction of technology usage and travel among older people. It concludes with a policy agenda …

The Green New Deal And Transit Investment, Eric Bruun

PSU Transportation Seminars

I have spent much of my professional life advocating for high quality transit infrastructure even if it takes a long time to build. I now believe we must focus on investments that can reduce greenhouse gas generation quickly. I cite some examples of how slowly projects have been built compared to peer nations and explain why.

Understanding Connections Between Mobility, Transportation, And Quality Of Life In Refugee Communities In Tucson, Arizona, Orhon Myadar, Arlie Adkins, Maia Ingram, Nicole Iroz-Elardo

TREC Final Reports

In this multidisciplinary research project we aimed to study mobility challenges that refugees in Tucson, AZ, experience after their resettlement. Using qualitative and quantitative data collected from interviews and survey data, we argue that mobility shapes the ways refugees foster social connections, attain employment and access educational opportunities. Accordingly, barriers to mobility negatively impact refugees’ perception of well-being in post resettlement. However, these challenges are not experienced evenly. Nor are refugees passive subjects who lack agency in overcoming various barriers they experience. The study reveals the resilience of the refugee community in navigating the intersectional challenges they confront related to …

Extreme Heat Vulnerability Among Older Adults: A Multi-Level Risk Index For Portland, Oregon, Jacklyn N. Kohon, Katsuya Tanaka, Dani Himes, Paula Carder, Eiji Toda, Bryant Carlson

Institute on Aging Publications

Background and Objectives

Extreme heat is an environmental health equity concern disproportionately impacting low-income older adults and people of color. Exposure factors, such as living in rental housing and lack of air conditioning, and sensitivity factors, such as chronic disease and social isolation, increase mortality risk among older adults. Older persons face multiple barriers to adaptive heat mitigation, particularly for those living in historically temperate climates. This study measures two heat vulnerability indices to identify areas and individuals most vulnerable to extreme heat and discusses opportunities to mitigate vulnerability among older adults.

Research Design and Methods

We constructed two heat …

Psu Student Housing Insecurity Interim Report, Jacen Greene, Homelessness Research & Action Collaborative, Portland State University

Homelessness Research & Action Collaborative Publications and Presentations

EXECUTIVE SUMMARY

Project Background

This study on student housing insecurity and homelessness was funded as part of a HUD FY2023 Community Project Funding Opportunity awarded to Portland State University. Phase 1 of the study, which led to this report by PSU’s Homelessness Research & Action Collaborative (HRAC), includes a literature review; a summary of PSU student survey results; a description of PSU programs based on interviews with staff and administrators; an analysis of programs at other institutions; and a set of recommendations for better addressing student housing needs. Phase 2 of the study will include the results of a comprehensive …

Webinar: Transportation Resources And Behaviors Among Older Immigrants And Migrants, Rebecca Mauldin, Stephen Mattingly, Rupal Parekh

TREC Webinar Series

This presentation reports findings from a cross-sectional survey of older Vietnamese immigrants in the Dallas-Fort Worth, TX metroplex and members of a Hispanic senior center in Hartford, CT. In addition to providing a description of transportation resources and behavior, we present a method for assessing the geospatial "regular activity spaces" of older adults based on the frequency and locations of routine activities. We also present options for assessing the geospatial burden of providing rides to older adults using "ride-provision activity spaces," which entails the frequency and locations of activities for which rides are given. Finally, we discuss the association of …

Transportation Behavior Among Older Vietnamese Immigrants In The Dallas-Fort Worth Metroplex: Well-Being, Geospatial Mobility, And Potential Indicators For Ride Providers’ Geospatial Burden, Rebecca L. Mauldin, Stephen Mattingly, Mahshid Haque, John P. Connolly, Latisha Thomas, Zachary Tarbet, Farzana Chowdhury, Rupal Parekh

TREC Final Reports

Nearly 4.6 million immigrants aged 65 and older live in the United States. This population is expected to more than triple in size by 2050. A lack of culturally appropriate transportation solutions for older immigrants creates disparities in access to services for older immigrant populations, increasing their risk of social isolation and reduced physical and mental health. A growing number of older immigrants live in low-density urban environments, which are characterized by high automobile dependency and limited public transportation. In these environments, older immigrants are likely to depend on others to provide private transportation. Negative aspects of this reliance on …

Sustaining Multimodal Choices: Examining Travel Behavior For Non-Work Trips Beyond Covid-19, Yizhao Yang, Rebecca Lewis

TREC Final Reports

Increasing the usage of sustainable travel modes requires changes in both environmental and psychological dimensions. A knowledge gap exists concerning the mechanism via which various factors interact to shape travel decision. Gaining such knowledge requires our ability to examine people’s behavioral adjustment in reaction to environmental and psychological changes or interventions.

This project uses COVID-19 as a natural experiment, treating the significant disruption induced by the pandemic as an intervention to study changes in travel behaviors and adoption of different travel choices following the COVID pandemic. This project builds upon a 2020 study conducted by the PI’s. It adopts a …

82nd Avenue Tree Canopy Development, Amber Shackelford, Alvin Dimalanta, Caleb Susuras, Darby O'Brien, Eiji Toda

Master of Urban and Regional Planning Workshop Projects

The 82nd Avenue Tree Canopy Development project envisions a climate resilient corridor with abundant tree canopy on 82nd Avenue that contributes to a more sustainable Portland. It aims to develop a community-centered tree canopy plan to mitigate negative impacts caused by the current treeless streetscape. An evidence-based analysis will guide a tree planting framework along 82nd Avenue from I-84 to Foster-Powell. The final report will include policies supporting tree canopy development, strengthening the coalition's Portland Clean Energy Fund application, fostering collaboration between landowners and government agencies, and promoting tree preservation strategies.

Climate Change Policies And Older Adults: An Analysis Of States’ Climate Adaptation Plans, Bryant Carlson, Jacklyn N. Kohon, Paula Carder, Dani Himes, Eiji Toda, Katsuya Tanaka

Institute on Aging Publications

Background and Objectives

As climate change drives more frequent and intense weather events, older adults face disproportionate impacts, including having the highest mortality rates from storms, wildfires, flooding, and heat waves. State governments are critical in deploying local resources to help address climate change impacts. This policy study analyzes states’ climate adaptation plans to assess the methods through which they address the impact of climate change on older adults.

Research Design and Methods

This study uses content analysis to analyze available climate change adaptation plans for all U.S. states for strategies designed to increase resilience of older adults to impacts …

Electric Vehicle Charging Stations And Oregon Federal Lands: A Prospective Policy Analysis, Cole P. Grisham

Hatfield Graduate Journal of Public Affairs

In 2022, the Oregon Department of Transportation (ODOT) committed $100M towards expanding electric vehicle (EV) charging stations statewide. The policy goal is to provide EV fast-charging capacity[1] for four vehicles per station over the Interstate 5 and 84 corridors, along with the US 101, 97, 26, and 20 corridors. ODOT’s investment establishes clear statewide EV charging corridors for the traveling public, not only in the most populated corridors but also across the more rural parts of Oregon and connecting to neighboring states. In order for the travelling public to access public lands for recreation, economic, and other purposes by …

Confessions Of A Traffic Engineer: How The Mutcd Impacts Everything, Peter Koonce

PSU Transportation Seminars

Pete Buttigieg, USDOT Secretary of Transportation has described the Manual on Uniform Traffic Control Devices (MUTCD) as “notorious”… and for cities, it has been a challenging document to navigate to implement multimodal solutions. This presentation will share upcoming changes to the Manual, ideas for research to inform practice, and ways that cities can interpret data to make positive change in their community.

Webinar: Collecting And Analyzing Pedestrian Behaviors At Intersections Using Lidar Tracking Technologies, Taylor Li, Sirisha Kothuri

TREC Webinar Series

The aim of this research is to investigate pedestrian behavior at signalized intersections using state-of-the-art LIDAR sensing technologies and to use this data, along with vehicular data, to develop a more effective multimodal signal control system. In the presentation, the presenters will describe a novel method of collecting pedestrian crossing behaviors at signalized intersection, discuss the findings and implications of data analytics, and introduce a novel approach to dynamic flashing yellow arrow mechanisms to reduce the conflict between left turn vehicles and crossing pedestrians.

Explore Regional Variation In The Effects Of Built Environment On Driving With High Resolution U.S. Nationwide Data, Liming Wang

PSU Transportation Seminars

There have been numerous studies on the relationship between travel behavior and built environment over the last few decades. Prior studies have mostly focused on producing point estimates of model coefficients and ended up with a wide range of estimates for the built environment elasticity of travel behavior, including household Vehicle Miles Traveled. With few exceptions, previous studies use data from a single region or a small number of regions, and thus are not able to sufficiently investigate the regional variation in built environment elasticity.

On the other hand, a few papers have addressed the heterogeneity of elasticity among different …

The Use And Influence Of Health Indicators In Municipal Transportation Plans​​, Kelly Rodgers

PSU Transportation Seminars

As a social determinant of health, transportation significantly contributes to well-being through several pathways. Researchers and practitioners have called for health indicators as one way to integrate public health concerns into transportation decision-making. However, it is unclear how indicators are used and what their impact is on policy. This case study of five cities explored how health-related indicators are being used in municipal transportation plans, whether they are institutionalized into transportation agency decision-making processes, and what influence they have on administrative decision-making. In addition, this research also explored the conceptual use of indicators as it relates to social learning and …

Webinar: Planning And Development In Gateway Communities, Post Covid, Philip Stoker

TREC Webinar Series

Gateway communities are the small towns outside of national parks, forests, scenic rivers, and ski resorts. This presentation will highlight the housing, transportation, and development challenges that these communities faced in the aftermath of the COVID 19 pandemic. Our study captured the perspectives of over 200 communities using a questionnaire and case study approach. We present these results and highlight the innovative strategies that these communities are using to address their housing and transportation challenges.

Pedestrian Behavior Study To Advance Pedestrian Safety In Smart Transportation Systems Using Innovative Lidar Sensors, Taylor Li, Sirisha M. Kothuri, Katherine L. Keeling, Xianfeng Terry Yang, Farzana R. Chowdhury

TREC Final Reports

Pedestrian safety is critical to improving walkability in cities. Although walking trips have increased in the last decade, pedestrian safety remains a top concern. In 2020, 6,516 pedestrians were killed in traffic crashes, representing the most deaths since 1990 (NHTSA, 2020). Approximately 15% of these occurred at signalized intersections where a variety of modes converge, leading to the increased propensity of conflicts. Current signal timing and detection technologies are heavily biased towards vehicular traffic, often leading to higher delays and insufficient walk times for pedestrians, which could result in risky behaviors such as noncompliance. Current detection systems for pedestrians at …

Rural Gentrification And The Spillover Effect: Integrated Transportation, Housing, And Land Use Challenges And Strategies In Gateway Communities, Danya Rumore, Philip Stoker

TREC Final Reports

Small towns and cities near national parks, public lands, and other natural amenities throughout the West are experiencing rapid growth and increased visitation. These “gateway communities” comprise a significant portion of the rural West, constituting about 31% of all communities and more than 60% of those under 25,000 people. Our prior NITC-funded research shows that growth and increased tourism create a range of “big city challenges” for gateway communities, particularly a significant increase in housing prices, which pushes the local workforce to outlying areas and other rural communities. As a result, despite being small towns, many developed gateway communities have …

Webinar: Improving Recreational Trail Accessibility With A Volcanic Ash Treatment, Charles Riley, Ashton Greer

TREC Webinar Series

Recreational trails serve as valuable transportation corridors and support the health of users. Wheelchair accessibility of recreational trails depends on a variety of conditions, including slope, cross-slope, and surface characteristics. This project focused on improving the firmness and stability of a 0.2-mile section of trail that was otherwise accessible. The existing trail surface consisted of loose ¼” off-specification aggregate on native soil. A volcanic ash-Portland cement binder, studied in prior research, was batched, distributed, mixed, wetted, and compacted on site to improve the firmness and stability of the surface resulting in a smoother surface with less rolling resistance. The webinar …

Transportation Safety Culture: Where We Are And What It Means, Tara Beth Goddard

PSU Transportation Seminars

Like any healthy professional community, the transportation safety community is not homogenous or without constructive conflict. The increased attention on systems thinking – most commonly known, if not necessarily well understood, under the “Vision Zero” approach – has sparked debate among engineers, planners, academics, public health professionals, advocates, and others about where our attention should be focused to reduce the epidemic of traffic violence. The built environment? Drivers? Engineers and planners? Car culture? What IS car culture? Dr. Goddard brings together her research conducted with colleagues on police crash reporting processes, NHTSA crash investigations, attitudes and effects of the language …

Network Effects Of Disruptive Traffic Events, Juan Medina, Xiaoyue Cathy Liu

TREC Final Reports

Current traffic management strategies are based on expected conditions caused by recurring congestion (e.g., by time of day, day of week), and can be very effective when provisions are also given for reasonable variations from such expectations. However, traffic variations due to non-recurrent events (e.g., crashes) can be much larger and difficult to predict, making also challenging efforts to identify, measure, and forecast their disruptive effects. This project explores a proactive approach to deploy a tool for managing non-recurrent congestion by identifying and quantifying the effects of disruptive traffic events at a microscopic level using a comprehensive set of data …

New Lidar System Pinpoints Pedestrian Behavior To Improve Eficiency And Safety At Intersections, Taylor Li, Sirisha M. Kothuri, Xianfeng Terry Yang

TREC Project Briefs

Pedestrian safety is critical to improving walkability in cities. To that end, NITC researchers have developed a system for collecting pedestrian behavior data using LiDAR sensors. Tested at two intersections in Texas and soon to be tested at another in Salt Lake City, Utah, the new software created by a multi-university research team is able to reliably observe pedestrian behavior and can help reduce conflicts between pedestrians and vehicles at signalized intersections. The Utah Department of Transportation (UDOT) is already working on implementing this new LiDAR system to improve data collection at intersections.

Impacts Of Successive Drug Legislation Shifts: Qualitative Observations From Oregon Law Enforcement [Interim Report: Year One], Kelsey S. Henderson, Christopher M. Campbell, Brian Renauer

Criminology and Criminal Justice Faculty Publications and Presentations

This report provides the initial findings of Year 1 of a multi year project to understand the effects of successive drug policy efforts in Oregon, with special focus given to Ballot Measure 110 (M110).

Related Reports:
Key Points in Preparation for Oregon Legislative Session (2024): Examining the Multifaceted Impacts of Drug Decriminalization on Public Safety, Law Enforcement, and Prosecutorial Discretion (December 2023)

An Additive Model of Engagement: Considering The Role of Front-End Criminal Justice Agencies in Treatment Provisions [Interim Report: Year Two]

2023 Adult Foster Home: Resident And Community Characteristics Report On Adult Foster Homes, Ozcan Tunalilar, Sarah Dys, Paula Carder, Diana Jacoby, Sheryl Elliott, Minju Kim, Nathan Finch Parsons, Wafi Albalawi

Institute on Aging Publications

This report is the ninth installment of the Oregon Community-Based Care Study: Resident and Community Characteristics Report on Adult Foster Homes. Each year, the Institute on Aging at Portland State University (IOA/PSU) collects and reports information that can inform and advise policymakers, state and county agency staff, advocates for older adults and people with physical disabilities, and AFH owners and providers about the AFH landscape in Oregon. The results covered in this report include home and owner characteristics, staff positions, wages, and hiring challenges, consumer payer sources, additional fees and services, resident demographics, health conditions, personal care, health services use, …