NITC research led by Reid Ewing of the University of Utah, examining impacts that the built environment and development patterns have on transportation, has produced a number of journal articles in the past year. Three 2021 articles highlighted below each focus on different aspects of the body of work, which revolves around polycentric development and trip generation.
A May 2021 article in the Journal of Transport Geography estimated a vehicle ownership model that contributes to our understanding of vehicle ownership and improves the accuracy of travel demand forecasts. "The built environment and vehicle ownership modeling: Evidence from 32 diverse regions in the U.S.," authored by Sadegh Sabouri, Guang Tian, Reid Ewing, Keunhyun Park and William Greene, draws on findings from the NITC project Key Enhancements to the WFRC/MAG Four-Step Travel Demand Model.
Two main outcomes of this paper are:
- The number of vehicles owned by a household increases with socio-demographic variables and decreases with almost all of the built environmental variables. For the urban planning and design practices, this finding suggests that car shedding occurs as built environments become more dense, mixed, connected,...
Researchers Amy Parker, Martin Swobodzinski, Julie Wright, Kyrsten Hansen and Becky Morton of Portland State University, along with Elizabeth Schaller of American Printing House for the Blind, have published a literature review in Frontiers in Education: Wayfinding Tools for People With Visual Impairments in Real-World Settings: A Literature Review of Recent Studies.
The literature review, published in October 2021, and a case study published in September 2021 in the same journal are both related to an ongoing project led by Swobodzinski. The project, Seamless Wayfinding by Individuals with Functional Disability in Indoor and Outdoor Spaces: An Investigation into Lived Experiences, Data Needs, and Technology Requirements, is funded by the National Institute for Transportation and Communities (NITC).
The October article reviews 35 peer reviewed articles in order to identify and describe the types of wayfinding devices that people who are blind, visually impaired or deafblind use while navigating indoors and/or outdoors in dynamic travel contexts.
Within this...Read more
Low-income residents, immigrants, seniors, and people with disabilities – these are people who stand to gain the most from new tools and services that reduce transportation costs and travel time. However, issues of affordability, technology adoption, banking access or other barriers can limit access to these new mobility opportunities.
In the latest report funded by the National Institute for Transportation and Communities (NITC), New Mobility For All: Evaluation of a Transportation Incentive Program for Residents of Affordable Housing in Portland, OR, Portland State University researchers Nathan McNeil, John MacArthur and Huijun Tan worked with the City of Portland’s Bureau of Transportation (PBOT) to evaluate a local pilot program: the ...Read more
The National Institute for Transportation and Communities (NITC) is happy to welcome some new faces into our six-university consortium, funded by the U.S. Department of Transportation.
Latest NITC Faculty and Researchers to Join their UniversitiesRead more
Portland State University researchers Martin Swobodzinski and Amy Parker, with student co-authors Julie Wright, Kyrsten Hansen and Becky Morton, have published a new article in Frontiers in Education: "Seamless Wayfinding by a Deafblind Adult on an Urban College Campus: A Case Study on Wayfinding Performance, Information Preferences, and Technology Requirements."
The article reports on an empirical evaluation of the experience, performance, and perception of a deafblind adult participant in an experimental case study on pedestrian travel in an urban environment. The case study assessed the degree of seamlessness of the wayfinding experience pertaining to routes that traverse both indoor and outdoor spaces under different modalities of technology-aided pedestrian travel. Specifically, an adult deafblind pedestrian traveler completed three indoor/outdoor routes on an urban college campus using three supplemental wayfinding support tools: a mobile application, written directions, and a tactile map.
Results indicate that wayfinding performance and confidence differed considerably between the three wayfinding support tools. The tactile map afforded the most...Read more
What is the relationship between access to transportation and our own perception of physical health?
That's the question researchers explored in the latest report funded by the National Institute for Transportation and Communities (NITC), "Examining the Impact of Transportation- Related Barriers on Self-Perceived Physical Health among Adults in the United States." Specifically looking at household car ownership, the study found that having access to a vehicle correlated with better self-reported health.
Among the other modes, respondents who used buses or paratransit were more likely to report their physical health as poor, while those who walked, biked or rode the train were more likely to report better physical health.
The National Household Travel Survey (NHTS), conducted every 5 to 7 years by the Federal Highway Administration, is the primary source of information on the travel behavior of the American public. In 2017 the...Read more
Jaclyn Schaefer is a graduate of the civil engineering master's program at Portland State University. A former Dwight David Eisenhower Transportation Fellow, she is now a Transportation Engineer 2 in training at the Washington State Department of Transportation. During her time at PSU, Jaclyn worked as a graduate research assistant on various projects with Dr. Miguel Figliozzi. At the 2020 TRB Annual Meeting, she presented the results of a study examining how the presence of bicycles on roads without bicycle lanes affects passenger vehicle travel speeds. Jaclyn was awarded NITC scholarships during both the 2018/19 and 2019/20 academic years.
Tell us about yourself?
I am a recent graduate from Portland State University, where I received a MS in civil and environmental engineering, and previously completed a BS in civil engineering. During my time as a graduate student at PSU, I was fortunate to work under Dr. Miguel Figliozzi conducting research on factors affecting traffic speeds and speed limit compliance on roads with a high percentage of bicycles (an ODOT research project with co-PI Avinash Unnikrishnan) and studying the spatial distribution of...Read more
The National Institute for Transportation & Communities (NITC) research consortium, led by Portland State University, introduced a new grant this year. With the extension of the FAST Act, we received one more year of funding, and we're using it to ensure that NITC research makes the impact on practice that we know it can. With that in mind, we invited proposals to build on previous accomplishments by NITC researchers, with the goal of strengthening partnerships with transportation agencies and community organizations and creating resources for practitioners. We've awarded five new "Translating Research to Practice" projects, each aimed at making a concrete difference in transportation practice. The five new projects are:
A 2021 article in Health & Place documents the current state of the practice in measuring perceived social elements of pedestrian environments, with the goal of identifying measurement strategies to understand and support walking.
"Measuring Perceptions Of Social Environments For Walking: A Scoping Review Of Walkability Surveys" was authored by Nicole Iroz-Elardo, Arlie Adkins and Maia Ingram of the University of Arizona.
The neighborhood pedestrian environment is an important determinant of physical activity and health. Despite widespread acknowledgment that neighborhoods' social and physical characteristics contribute to a walkable place, constructs and metrics remain focused primarily on the built environment. This scoping review documents the current state of the practice to measure perceived social elements of pedestrian environments in order to identify measurement strategies to understand and support walking, particularly in socially diverse neighborhoods.
The researchers identified 20 survey instruments focused on pedestrian environments, walkability, or physical activity at the local (neighborhood)...Read more
We're proud to announce the publication of a new NITC dissertation: "Pedal the Old Pueblo: A Naturalistic Study on Bicycling in Tucson, AZ," by Joey Iuliano of the University of Arizona, Tucson.
"There are many different reasons to ride a bike – commuting, recreational riding, and athletic pursuits are a few. This dissertation work highlights the need to understand how different types of cyclists interact with the built environment and their experiences with other road users. Utilizing video cameras helps fill in this gap by capturing their lived experiences throughout the course of a ride. Coupling this footage with larger datasets, such as annual bicycle counts or Strava, can show planners where there are issues with safety and infrastructure design, how many others may be experiencing those issues, and helps with targeted improvements," Iuliano said.
City investments in bicycle infrastructure can improve residents' health and wellness, lower pollution, fight climate change, and reduce congestion. While transportation geography and planning have long focused on looking at how vehicles, goods, and services move across a region, there is a growing body of research focused on the movement of people through a city.
Iuliano's dissertation uses both the City of Tucson and Pima County, Arizona – a region of low-density development, traditionally focused on the car and now...Read more