Urban Studies Commons^™

The Trade-Offs Between Population Density And Households' Transportation-Housing Costs, Haizhong Wang

PSU Transportation Seminars

As metropolitan area governments and others promote density-promoting “smart growth” policies, finer analysis is needed to quantify the impact of such policies on households' transportation and housing costs. Existing research suggests that households in urban areas trade-off between housing costs and transportation costs, but does not explore how policies to increase urban densities might explicitly impact this balance. Furthermore, the research does not adequately distinguish between the effect of urban area density and the effects of other factors associated with urban area density (e.g metropolitan area size and household incomes) on housing costs. This research uses the 2000 Census Public …

Affordable Housing As A Prerequisite For A Safe, Healthy, Equitable Transportation System: Evidence From A Nationwide Evaluation Of Location Efficiency Within The Low-Income Housing Tax Credit (Lihtc) Program, Arlie Steven Adkins

PSU Transportation Seminars

Mountains of research over the last several decades show that how we get around and how much physical activity we get are closely linked with the built environment of the neighborhoods where we live. This means that the health, economic, and environmental benefits associated with active travel and transit are place-based and that affordable housing in walkable, location efficient places needs to be thought of as a critical component of planners’ efforts to provide safe, healthy, and equitable transportation systems. This talk will provide an overview of the links between affordable housing and transportation planning and present research findings from …

Transportation Leadership Education: Portland Traffic And Transportation Course A Case Study And Curriculum, Nathan Mcneil

Urban Studies and Planning Faculty Publications and Presentations

The Portland Traffic and Transportation course serves a number of different purposes. On one hand, it is designed to develop citizens who are informed about the transportation system, including how it got where it is today, what agencies and actors play a role in its operation and development, and how they, as citizens, play a role in its future. In this sense, there is a goal of broadening and deepening the existing knowledge about the system among the general population. On the other hand, there is an implicit goal of encouraging participation in the system with the understanding that doing …

Crowdsourcing The Collection Of Transportation Behavior Data, Christopher Bone, Seth Kenbeek, Ken Kato, Jacob Bartruff

TREC Final Reports

Understanding the travel behaviors of individuals who use public transit is essential for enhancing the performance, sustainability and efficiency of public transportation. Contemporary methods for collecting data on transportation behavior are focused on manual or automated procedures for counting the number of individual passengers entering or exiting transit vehicles. While such methods provide useful data for understanding transit demand throughout a network, they ignore the important details of how passengers travel to and within a network as well as their personal experiences during their commute, all of which can enrich the ability of transit agencies to provide sustainable transportation. To …

Investigating The Correlation Between Freeway Service Levels And Freeway Service Patrol Assists, Nora Chin

Master's Theses

The Bay Area Metropolitan Transportation Commission’s (MTC) Freeway Service Patrol’s highway motorist response service is reporting a reduction in their service levels. We analyze the relationship between the reduction in the Bay Area Freeway Service Patrol’s (FSP) motorist assists and changes in vehicle miles traveled (VMT), California Highway Patrol (CHP) reported incidents, and cover research on the impact of new and old vehicle fleet turnover. VMT and CHP incidents have differential effects on FSP assists. Although incidents occurring on freeways with high traffic flows tend to cause more congestion, the trend in local VMT along Bay Area freeway corridors does …

Webinar: Pedestrians Count! – How To Measure Foot Traffic, Krista Nordback, Shawn Turner, Scott Brady, Theo Petritsch, David Jones

TREC Webinar Series

Learn from experts and share your knowledge of how to count pedestrians. Are people with clipboards the only way? What technologies work and how can we use them? How can an agency improve an existing or start a new pedestrian count program? Join us for an information sharing webinar on this quickly evolving topic. We will learn from leaders in the field and encourage active audience involvement, so come prepared to share your experience!

This IBPI webinar is part of a project sponsored by FHWA to study best practices in pedestrian traffic monitoring.

Portland State University is working with ICF …

Webinar, Part Ii: Four Types Of Cyclists: A National Look, Jennifer Dill

TREC Webinar Series

Originally developed by Roger Geller for the city of Portland, the "Four Types of Cyclists" typology (Strong and Fearless; Enthused and Confident; Interested but Concerned; No Way No How) has been adopted widely to help guide efforts to increase bicycling for transportation. This webinar will present findings from a new, national survey conducted in collaboration with the National Association of Realtors. We will address the following questions:

• Does the Four Types of Cyclists typology apply nationally?
• What are the characteristics of each type of cyclist?
• How does the existing environment, including bicycle infrastructure, affect the share of people in each …

Webinar, Part I: Americans' Views Of Transportation And Livable Communities, Jennifer Dill, Hugh Morris

TREC Webinar Series

The National Association of Realtors® and Portland State University conducted a nationwide survey in the 50 largest metropolitan areas, asking Americans about where they live, where they want to live, and their travel habits.

This webinar will present the key findings from that survey, including people’s preferences to live in mixed-use, walkable communities and what may help them walk, bicycle, and take transit more. The large sample (3,000) allows us to look at demographic differences, including between the generations (Millennials, Baby Boomers, etc.).

Go By Transit! Out-Of-Town Adventures On Local Public Transportation, Linn Davis

Metroscape

Linn Davis recounts his epic public-transit journeys to far-flung areas of the metroscape, and the surprising discoveries he made along the way.

Make Way For The Orange Line And A Milwaukian Renaissance, Ben Maras

Metroscape

Ben Maras describes how residents of Milwaukie, Oregon feel about the new TriMet Orange Line that will surely bring change to this city just over 20,000.

Toward A Spatial-Temporal Measure Of Land-Use Mix, Steven R. Gehrke, Kelly Clifton

Civil and Environmental Engineering Faculty Publications and Presentations

Urban planning and public-health research has long been interested in the connection between land-use mix and travel. Interest from urban planners stems from the potential of transportation efficiency gains achieved by an increased land-use mix and subsequent shortening of trip lengths; whereas, public-health research advocates an increased land-use mix as an effective policy for facilitating greater physical activity. Yet, despite the transportation, land-use, and health benefits related to improving land-use mix and the extent of topical attention given by researchers, no consensus has been reached regarding the magnitude of its effect on travel. This absence of agreement may largely be …

Green Loop Swpdx Concept Plan: Alignment And Design Treatment Recommendations For The Southwest Green Loop, Ashley Eaton, Brian Gunn, Jake Adams, Kate Washington, Mohd Meidiansyah

Master of Urban and Regional Planning Workshop Projects

The Green Loop SWPDX project was conducted by five students in partnership with the Portland Bureau of Planning & Sustainability Urban Design Studio and Portland State University's Campus Planning Office. It explores potential alignments and design treatments for Portland's Green Loop, specifically with the southwest downtown quardrant of the Central City. The southwest quadrant of the Green Loop links the South Park Blocks to the non-automobile Tilikum Crossing bridge. The Green Loop SWPDX project explores both large and small-scale possibilities for creating a sense of safety and a place for cyclists and pedestrians in the Central City. This document reports …

Where Does Bicycling For Health Happen? Analysing Volunteered Geographic Information Through Place And Plexus, Greg P. Griffin, Junfeng Jiao

Research Collection College of Integrative Studies

Research on the role of bicycling for health through physical activity has been limited by the lack of information on where bicyclists ride. New big data sources available through smartphone-based applications provide a rich source to provide bicycle volume data more comparable to the scale of information available for automotive and public transit modes. In the case of smartphone apps for fitness tracking, results of this data can be used similar to the growing application of global positioning systems for automotive travel surveying. The authors evaluate data from Travis County, Texas for the purpose of determining where bicyclists ride, primarily …

Development Of A Pedestrian Demand Estimation Tool: A Destination Choice Model, Christopher D. Muhs, Kelly Clifton, Patrick Allen Singleton, Robert J. Schneider

Civil and Environmental Engineering Faculty Publications and Presentations

There is growing support for improvements to the quality of the walking environment, including more investments to promote pedestrian travel. Planners, engineers, and others seek improved tools to estimate pedestrian demand that are sensitive to environmental and demographic factors at the appropriate scale in order to aid policy-relevant issues like air quality, public health, and smart allocation of infrastructure and other resources. Further, in the travel demand forecasting realm, tools of this kind are difficult to implement due to the use of spatial scales of analysis that are oriented towards motorized modes, vast data requirements, and computer processing limitations.

To …

Mobility And Accessibility In Shrinking Cities, Joanna Ganning

TREC Project Briefs

A University of Utah researcher explores the synthesis of mobility- and accessibility-based transportation planning in the context of urban decay.

Peak Of The Day, Or The Daily Grind?, Oliver Blair Smith

TREC Project Briefs

Survey research explores the relationship between commuting and overall happiness.

Transit Can Inspire Neighborhood Revitalization, Gerardo Francisco Sandoval, Roanel Herrera

TREC Project Briefs

In-depth case studies explore how transit-oriented development can revitalize neighborhoods without displacing low-income residents.

2014 Transit Oriented Developments Survey, Jennifer Dill, Nathan Mcneil

TREC Final Reports

This report presents results from surveys of residents at several transit-oriented developments (TODs) in Portland, Hillsboro, Tigard, and unincorporated Clackamas County. The research complements our previous survey work for Metro done at eight TODs in 2010 and 11 TODs in 2007.

Webinar: Impacts Of Roadway And Traffic Characteristics On Air Pollution Risks For Bicyclists, Alexander Y. Bigazzi

TREC Webinar Series

Active travel such as walking and bicycling can lead to health benefits through an increase in physical activity. At the same time, more active travelers breath more and so can experience high pollution inhalation rates during travel. This webinar will review the state of knowledge about how roadway and traffic characteristics impact air pollution risks for bicyclists, including the latest PSU research quantifying bicyclists' uptake of traffic-related air pollution using on-road measurements in Portland. The PSU research team including Alex Bigazzi, Jim Pankow, and Miguel Figliozzi quantified bicyclist exposure concentrations on different types of roadways, respiration responses to exertion level, …

Dash: The Portland Region's Next-Generation Activity-Based Model, Richard Walker

PSU Transportation Seminars

DASH is the next generation activity based model being developed by the Metro Research Center. Upon completion, it will be one of the most advanced in the nation. This model will be used extensively in estimating the activity and travel response of individuals to policies and infrastructure investments. Compared to past models, it will include enhanced consideration of the socio-economic roles of individuals, discrete temporal dynamics, and intra-household dependencies.

Smarter Cycling, Cory Koehler, Richard Smith, Sarah St. Clair, Alex Taylor, Aubrey Masten, Konon Phillips

PSU High School Innovation Challenge

With the current trend of urbanization, the populations of major cities such as Portland are steadily increasing. This is causing a variety of problems, both within the city and in rural areas. In regards to the city, the major challenges facing city planners are the need for the expansion of residential neighborhoods and a rise in traffic throughout the city. One way to tackle the issue of an abundance of traffic, is to make alternate means of transportation more appealing to residents. We chose to focus on bicycling because of the bike‐friendly culture already in place in Portland. An increase …

Methods To Increase Fuel Efficiency In Post-Production Automobiles, Hope J. Corsair

TREC Final Reports

While much focus has been placed upon the identification of completely novel technologies for the future of personal transportation world-wide, the majority of the US and the world at large will be reliant upon petrol for personal transportation well into the future. While EVs, alternative fuels, and hybrid cars have all started to make an impact on the market, with varying amounts of success and consumer accessibility, their relative market share is and is projected to continue to be low. Furthermore, a large segment of the population is not readily able to ever purchase a new car as a consumer …

Lawyered Up: Local Communities, Courts, And Urban Renewal, Madeline Spolin

Sociology Honors Projects

What is the role of the judicial system in solving issues of urban renewal? I propose that communities use courts as a redress to become part of the decision making process on urban renewal issues, because courts provide procedural issues that are easily open to challenge in federal statute. I analyze public statements made throughout the construction of the Green Line in Minneapolis and St. Paul, Minnesota, a federally funded urban renewal project. In spite of built in public consultation processes, changes to transit design do not occur when concerns are raised at public consultation meetings; instead, they come from …

Webinar: A Comprehensive Evaluation Of Protected Cycling Facilities: Lessons From Five Cities, Christopher Monsere

TREC Webinar Series

As cities move to increase levels of bicycling for transportation, many practitioners and advocates have promoted the use of protected bike lanes (also known as “cycle tracks” or “protected bikeways”) as an important component in providing high-quality urban infrastructure for cyclists. These on-street lanes provide more space and physical separation between the bike lane and motor vehicle lane compared with traditional striped bike lanes. However, few U.S. cities have direct experiences with their design and operations, in part because of the limited design guidance provided in the past. There is limited research from North America on protected bike lanes, but …

Oregon Highway Cost Allocation Study: Carbon Tax Issue Paper, Portland State University. College Of Urban And Public Affairs. Northwest Economic Research Center

Northwest Economic Research Center Publications and Reports

The basic insight behind carbon pricing is not new, and is based in mainstream economic theory. If market interactions are leading to the overuse of resources outside of the market, imposing a price on the overused resource will bring it into the market and increase efficiency. Currently, the negative impacts associated with the release of carbon through fossil fuel combustion is not incorporated into the market. By imposing a price on carbon, fossil fuel consumers are incentivized to reduce their fuel usage. This reduction in fuel demand is not necessarily associated with lower economic output. In fact, depending on the …

Empirical Evaluation Of Transit Signal Priority Through Fusion Of Heterogeneous Transit And Traffic Signal Data And Novel Performance Measures, Wei Feng

PSU Transportation Seminars

Transit signal priority (TSP) is designed to reduce delay for transit vehicles through signalized intersections. For an existing TSP system, it is important to assess how timely and effective TSP phases are granted to buses that request priority. It is also necessary to evaluate the time savings and delays for buses and other vehicles as a result of TSP phases. However, due to the lack of disaggregated and integrated transit, traffic and signal phase data, previous studies have not investigated the TSP performance at the phase level. This study collects and integrates three archived databases: bus automatic vehicle location (AVL) …

Crowdsourcing Cycling Safety And Route Data With The “Orcycle” Smartphone App, Miguel Figliozzi

PSU Transportation Seminars

ORcycle is a new smartphone application (for both Android and iOS) developed by Transportation, Technology, and People (TTP) lab researchers at Portland State University as part of an Oregon Department of Transportation (ODOT) research project. ORcycle collects user, route, infrastructure, crash, and safety data. ORcycle was successfully launched in early November 2014 and presents many improvements over existing or similar apps. Initial data findings and insights will be presented. Lessons learned as well as opportunities and challenges associated with smartphone data collection methods will be discussed. More information about the app can be found here: http://www.pdx.edu/transportation-lab/orcycle.

Transportation System Impacts On Bicyclists' Air Pollution Risks: Considerations For System Design And Use, Alexander Y. Bigazzi, Miguel Figliozzi, James F. Pankow, Wentai Luo

PSU Transportation Seminars

Health risks associated with air pollution uptake while bicycling are often cited as a potential drawback to increased bicycling in cities. This seminar will provide an overview of how roadway and travel characteristics impact bicyclists' uptake of traffic-related air pollution. Specific considerations for planners and designers of urban transportation systems to mitigate risks for travelers will be discussed. In addition, the extent to which bicyclists themselves can unilaterally reduce their pollution uptake will be described. This seminar synthesizes findings from a recently completed doctoral dissertation at Portland State University and from the broader literature.

Webinar: Exploring Pedestrian Responsive Traffic Signal Timing Strategies In Urban Areas, Sirisha Murthy Kothuri

TREC Webinar Series

The role of walking in the development of healthy, livable communities is being increasingly recognized. In urban areas, intersections are often viewed as a deterrent to walking, as their operation primarily favors automobiles, leading to large and unnecessary delays for pedestrians. There is currently very limited research on accommodating and/or prioritizing pedestrians at signalized intersections in the North American context. Pedestrians are often considered as a deterrent to efficient vehicular traffic flow and therefore active efforts to include them in operational decisions at intersections have been lagging. This research aims to fill that gap by understanding factors that influence pedestrian …

Transit And Economic Resilience, Arthur C. Nelson, Matt Miller, Joanna P. Ganning, Philip Stoker, Jenny H. Liu, Reid Ewing

Urban Studies and Planning Faculty Publications and Presentations

Do fixed-guideway transit systems facilitate resilience with metropolitan areas? There is little literature making this connection theoretically and none testing it empirically. This paper helps close this gap in both respects. In evaluating metropolitan areas with light rail transit systems the authors find evidence that transit corridors on the whole performed better than control corridors during the recovery period of two recessions: that of the early 2000s and the so-called Great Recession. In particular, during the Great Recession transit corridors outperformed control corridors among many economic sectors. Outcomes were more impressive during recoveries from both the recession of the early …