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Full-Text Articles in Urban Studies and Planning

Addressing Changing Demographics In Environmental Justice Analysis, Aaron Golub Apr 2019

Addressing Changing Demographics In Environmental Justice Analysis, Aaron Golub

TREC Project Briefs

Since 1994, every Federal agency has a mandate to develop a strategy for identifying and addressing disproportionately high and adverse human health or environmental effects on low income populations and minority populations. In transportation planning this means including those communities’ voices in the planning process, and evaluating the social impacts early on.

A new report from the Federal Highway Administration (FHWA), prepared by Portland State University and ICF International, provides an in-depth analysis of national demographic trends and a synthesis of best long-range planning practices borne out of five case studies


Modeling Mixed Freeway Traffic: Human-Driven And Self-Driven Cars, Xianfeng Terry Yang, Zhao Zhang, Zhehao Zhang Dec 2018

Modeling Mixed Freeway Traffic: Human-Driven And Self-Driven Cars, Xianfeng Terry Yang, Zhao Zhang, Zhehao Zhang

TREC Project Briefs

Connected automated vehicles (CAVs) are typically equipped with communication devices (e.g., dedicated short range communications (DSRC)) and on-board sensors (e.g., Radar, Lidar, Camera, etc.). Communication devices would enable the exchange of real-time information between vehicles and infrastructures via vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) channels. Sensors equipped in vehicles are providing various vehicle sensor data (VSD) such as the CAV’s GPS location, speed and moving direction (trajectory). Existing studies have shown the effectiveness of using CAV trajectories as input in many traffic control models.

However, it can be expected that CAVs and human-driven vehicles (HVs) will co-exist on ...


Modeling For New Modes: Autonomous Vehicles & Shared Rides, Liming Wang, Joseph Broach, Huajie Yang Nov 2018

Modeling For New Modes: Autonomous Vehicles & Shared Rides, Liming Wang, Joseph Broach, Huajie Yang

TREC Project Briefs

Performance-based planning helps local and state decision makers to understand the potential impacts of policy decisions, supporting cost-effective investments and policy choices that can help achieve policy goals. In addition, it can enable monitoring of progress and facilitate needed adjustments, help them communicate to the public, and assist them with meeting federal regulations and the intent of MAP21. The Regional Strategic Planning Model (RSPM) is a performance-based planning tool first developed by Oregon State DOT (as GreenSTEP) and later adapted for use by other states in the form of the Federal Highway Administration (FHWA) Emissions Reduction Policy Analysis Tool (EERPAT ...


Empowering Portland's Youth To Choose Car-Free Mobility, Autumn Shafer, Jared Macary Jan 2018

Empowering Portland's Youth To Choose Car-Free Mobility, Autumn Shafer, Jared Macary

TREC Project Briefs

Little is known from research about how to motivate youth to choose non-car mobility, especially specific Portland-area youth. Understanding the current attitudes, beliefs, and behaviors of youth in relation to non-car mobility contributes to the sustainability of a long-term transportation system. Transportation system-related beliefs and behaviors of youth are likely to influence their willingness to access and support transportation services as adults. Today’s youth are tomorrow’s riders, bikers, walkers, voters, and transportation planners. Thus, it is important to develop age-appropriate messaging strategies and tactics that promote youth non-car mobility.

This project seeks to build on the sparse national ...


Following The Money From Investments To Outcomes, Robert Zako, Rebecca Lewis Sep 2017

Following The Money From Investments To Outcomes, Robert Zako, Rebecca Lewis

TREC Project Briefs

While it’s accepted that mixed-use development promotes active travel, researchers don’t have a consensus on exactly how land use determines people’s travel patterns.

The research examined:

  • The relationship between pedestrian travel and land use mix;
  • The impact of land use mix on pedestrian travel;
  • How operationalizing land use mix influences individual travel behavior

This work contributes theoretical and empirical tools for research and practice in transportation and land use planning.


When Cities Shrink, Affordability Does Too, Joanna Ganning, Jenna Rosie Tighe Jul 2017

When Cities Shrink, Affordability Does Too, Joanna Ganning, Jenna Rosie Tighe

TREC Project Briefs

To better understand the real costs of housing and transportation in a declining urban context, NITC researchers implemented a household survey to determine whether the assumptions made in existing research literature and in the LAI regarding household expenditures and transportation accessibility hold true when analyzing shrinking cities—generally, cities characterized by a long-term loss in occupied housing units. The project was led by Joanna Ganning of Cleveland State University, who has conducted previous research into shrinking cities with the support of the NITC program.


Homes Close To Fast Transit: The Value Is Still Rising, Victoria Perk, Martin Catalá, Maximillian Mantius, Katrina Corcoran Jul 2017

Homes Close To Fast Transit: The Value Is Still Rising, Victoria Perk, Martin Catalá, Maximillian Mantius, Katrina Corcoran

TREC Project Briefs

This research contributes to the relatively small body of literature on property value impacts of BRT in the U.S. by conducting a case study on Lane Transit District’s EmX BRT service in Eugene, Oregon, using econometric modeling techniques to estimate changes in property values associated with the BRT. The analysis is based on hedonic price regression analysis, where sale prices are modeled using several property characteristics that contribute to the market or sale price. The findings of this research indicate that the EmX BRT system does positively impact surrounding single-family home sale prices.


New Transit Developments: A Double-Edged Sword, Lisa K. Bates, Aaron Golub, Devin Macarthur, Seyoung Sung Jul 2017

New Transit Developments: A Double-Edged Sword, Lisa K. Bates, Aaron Golub, Devin Macarthur, Seyoung Sung

TREC Project Briefs

Researchers analyze the projected impacts of a proposed transit investment on affordability and mobility in a Southeast Portland corridor.


Focusing On Equity In Regional Plans, Kristine M. Williams Jun 2017

Focusing On Equity In Regional Plans, Kristine M. Williams

TREC Project Briefs

Metropolitan planning organizations (MPOs) have long been required to consider the equity implications of their regional transportation plans and processes.


Land Use And Active Travel: A Complex Relationship, Steven R. Gehrke Jun 2017

Land Use And Active Travel: A Complex Relationship, Steven R. Gehrke

TREC Project Briefs

While it’s accepted that mixed-use development promotes active travel, researchers don’t have a consensus on exactly how land use determines people’s travel patterns.


Barriers To Biking For Women And Minorities, Amy Lubitow May 2017

Barriers To Biking For Women And Minorities, Amy Lubitow

TREC Project Briefs

The health benefits of bicycling are well understood; numerous studies link increased cycling activity with improved health outcomes. Research suggest that the cycling behavior most likely to generate broad, population-level health benefits is everyday routine cycling—including running errands and taking other short trips. Despite these health benefits and new investment in cycling infrastructure, overall cycling levels in the U.S. lag behind many other nations. Amidst findings of increased ridership, research still finds that women and racial minorities are underrepresented as cyclists in North America.

While quantitative data may reveal estimates of these disparities, little is known about the ...


A Model For Better Crosswalk Safety, Miguel Figliozzi Mar 2017

A Model For Better Crosswalk Safety, Miguel Figliozzi

TREC Project Briefs

NITC researchers from Portland State University developed models to find what factors affected vehicles’ compliance with pedestrian safety laws.

The results suggest that treatments discouraging accelerating toward a crosswalk could help increase pedestrian safety.


Making Every Mode Count In Washington State, Krista Nordback Mar 2017

Making Every Mode Count In Washington State, Krista Nordback

TREC Project Briefs

A NITC report by Krista Nordback of Portland State University offers a step toward establishing a performance metric by which statewide progress with respect to bicycling and walking can be evaluated. The Washington State Pedestrian and Bicycle Miles Traveled Project discusses the relative merits of three different methods which can be used to compute bicycle miles traveled (BMT) and pedestrian miles traveled (PMT).


Metropolitan Centers Mean Smart Growth, Richard D. Margerum, Rebecca Lewis, Keith Bartholomew Mar 2017

Metropolitan Centers Mean Smart Growth, Richard D. Margerum, Rebecca Lewis, Keith Bartholomew

TREC Project Briefs

In this study, a multidisciplinary team from the University of Oregon and the University of Utah examined regional metropolitan center programs and policies in the Salt Lake City and Denver regions. The goal of the study was to examine this topic on two levels. First, to learn how and why local governments have adopted the concepts of metropolitan centers over time and the related supporting and constraining factors. Second, to understand how demographics, land use, and transportation choices have changed over time in the designated centers.


Improving Trip Data For Livable Communities, Kelly Clifton Feb 2017

Improving Trip Data For Livable Communities, Kelly Clifton

TREC Project Briefs

NITC researchers work to refine a framework for trip generation that includes people walking, biking and riding transit.


Could E-Bikes Spur A New Wave Of Biking In America?, John Macarthur Feb 2017

Could E-Bikes Spur A New Wave Of Biking In America?, John Macarthur

TREC Project Briefs

In this NITC study, researchers provided participants with electric bicycles to use for a ten-week trial period and surveyed them about the experience.


State Efforts To Fight Climate Change, Rebecca Lewis, Robert Zako Jan 2017

State Efforts To Fight Climate Change, Rebecca Lewis, Robert Zako

TREC Project Briefs

NITC Project Brief: A research project examines efforts in four states to reduce the greenhouse gas emissions caused by the transportation sector.


Mobility And Accessibility In Shrinking Cities, Joanna Ganning May 2015

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.


Making Streets Into Complete Streets, Marc Schlossberg, John Rowell May 2015

Making Streets Into Complete Streets, Marc Schlossberg, John Rowell

TREC Project Briefs

Researchers created a manual to aid planners in adopting complete streets policies and designs.


Making Concrete From Recycled Materials, Jason Ideker Jan 2014

Making Concrete From Recycled Materials, Jason Ideker

TREC Project Briefs

Making concrete out of recycled concrete aggregate, or RCA, can be a sustainable and cost-saving alternative to other aggregates. However, the quality of concrete made with RCA is dependent on the quality of the recycled material used. OTREC researchers Jason Ideker of Oregon State University and Jennifer Tanner of the University of Wyoming, with graduate student researchers Matthew P. Adams and Angela Jones, sought to determine some of the primary concerns involved with the use of RCA and to arrive at methods of assessing its durability for use in new concrete.

Alkali-silica reaction occurs in concrete over time, causing it ...


How Livable Is Your Transit System?, Marc Schlossberg Jan 2014

How Livable Is Your Transit System?, Marc Schlossberg

TREC Project Briefs

The U.S. Department of Housing and Urban Development has identified some “livability principles” which include healthy, safe and walkable neighborhoods and safe, reliable and economical transportation choices. Transit agencies and local governments routinely use metrics to evaluate the performance of transit systems, but a uniform standard of transit data collection does not exist outside of the reporting requirements of the National Transit Database (NTD). Because of the types of data collected for the NTD, the focus of performance measurements is often on ridership and financial performance, leaving aside the question of livability.

In an OTREC-sponsored project, principal investigator Marc ...


Traffic Safety Data: Expanding The Archive, Christopher Monsere, Myenwoo Lim, Chengxin Dai, Xiaowei Wu Mar 2013

Traffic Safety Data: Expanding The Archive, Christopher Monsere, Myenwoo Lim, Chengxin Dai, Xiaowei Wu

TREC Project Briefs

A project expands the capabilities of the Oregon Traffic Safety Data Archive, a tool for helping traffic safety engineers and planners reduce the occurrence of traffic accidents.


Closing The Gap: Developing A Transportation Curriculum For The Oregon Young Scholars Program: Project Summary Report, Carla Gary, Bethany Steiner, Chuck Kalnbach Feb 2013

Closing The Gap: Developing A Transportation Curriculum For The Oregon Young Scholars Program: Project Summary Report, Carla Gary, Bethany Steiner, Chuck Kalnbach

TREC Project Briefs

This OTREC educational proposal links experiential and transportation education from the University of Oregon with minority youth during the Summer ‘08 two-week session of the Oregon Young Scholar’s Program (OYSP). The grant provides OYSP an opportunity to create a transportation based curriculum during the Summer ‘08 program with the ultimate purpose of increasing minority interest and hopefully eventual employment in transportation related fields. OYSP was developed in 2005 to nurture the potential of marginalized minority students, to prepare these students for higher education, and to increase the awareness of their parents or caregivers about what it will take for ...


Connecting Students And The Community, Lynn Weigand Jan 2010

Connecting Students And The Community, Lynn Weigand

TREC Project Briefs

Nationwide, few university courses focus specifically on planning and design for pedestrian and bicycle facilities. Before this project, Portland State University had only one three-credit course on the subject, which did not provide adequate time to cover all aspects of bicycle and pedestrian transportation planning, policy, design and practice. Although the course provided a useful introduction to the topic and received excellent student reviews, faculty members saw a need to expand the curriculum to provide an opportunity for practical application of the theory and practice and increase the course’s academic rigor.

This project broadened the course offerings on bicycle ...


Pushing Pedalers: What Drives Bicycling?, Jennifer Dill, John Gliebe Jan 2010

Pushing Pedalers: What Drives Bicycling?, Jennifer Dill, John Gliebe

TREC Project Briefs

Using a bicycle instead of a motor vehicle for a portion of regular travel could increase people’s physical activity and help improve the nation’s health. Over 60% of personal trips are five miles or less – a reasonable distance to ride a bike – and nearly 40% are two miles or less. Yet current rates of bicycling for transportation are very low, despite the popularity of recreational cycling. Given the potential of bicycling as a means of everyday travel, why aren’t more people cycling? Very little information has been available on the relationship between different types of infrastructure, such ...