Intelligent Transportation Systems (ITS) need traffic data to run smoothly. At intersections, where there is the greatest potential for conflicts between road users, being able to reliably and intelligently monitor the different modes of traffic is crucial.
The Federal Highway Administration (FHWA) estimates that more than 50 percent of the combined total of fatal and injury crashes occur at or near intersections. For pedestrians the intersection is a particularly dangerous place: the City of Portland, Oregon identified that two-thirds of all crashes involving a pedestrian happen at intersections. And when darkness comes earlier in fall and winter, crashes increase dramatically. So knowing what's going on in low-visibility conditions is essential for mobility and safety of all road users.
Some agencies use cameras to monitor traffic modes, but cameras are limited in rainy, dark or foggy conditions. Some cities use radar instead of cameras, which works better in low-visibility but typically can't provide as rich a picture of what's going on. Conventional radar gives movement and position data for all...
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As we get older, transportation provides a vital link between home and community. Without reliable and easy ways to get around, many older adults (especially those who live alone) have limited access to essentials like groceries and medicine, let alone social interaction. A new report from the University of Texas at Arlington (UTA), Developing Strategies To Enhance Mobility And Accessibility For Community-Dwelling Older Adults, looked at the mobility challenges, barriers, and gaps that older adults experience, with an eye toward developing forms of assistance or educational strategies to fill those gaps.
Funded by the National Institute for Transportation and Communities (NITC) with additional support from The Senior Source, the interdisciplinary research team from the University of Texas at Arlington included Kate Hyun, Caroline Krejci and ...
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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...
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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 ...
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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 Universities
Nelson Gomez-Torres, University of Texas at Arlington
Dr. Nelson Gomez-Torres joins the faculty of the University of Texas at Arlington as an assistant professor of instruction in civil engineering. Before coming to UTA he was the Director of Civil and Industrial Engineering Programs at Universidad Ana G. Mendez in Puerto Rico. Nelson has worked in engineering design, construction management, and traffic studies, but he found his passion in helping to develop the next generation of... Read 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...
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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 RESEARCH
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...
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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.
Connect with Jaclyn on LinkedIn
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...
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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: