Transportation Commons^™

Outcomes Of Utilizing Uber Health To Improve Access To Healthcare At An Urban Student Run Free Clinic, Ciara Ivanics Ms, Emily Lau, Julie Fynke Mph, Ralph Williams Md, Juliann Binienda Phd

Medical Student Research Symposium

Introduction: The patient population of the Robert R. Frank Student Run Free Clinic (SRFC) often cite transportation as their most significant barrier to receiving care. Utilization of ridesharing services may reduce this barrier and improve patient adherence to clinic appointments.

Methods: All patients at the SRFC from February 2019 through November 2019 were offered participation in this IRB-approved randomized control trial (n=37). The intervention group was offered a roundtrip, free, pre-scheduled Uber Health ride, while the control group was offered free public transportation or utilized their own transportation. Participants received an appointment reminder by phone within two days of their …

The Future State Of Mobility, Jerome Quandt

Purdue Road School

Formed in 2018, the Illinois Autonomous Vehicles Association (ILAVA) is a privately funded non-for-profit organization focused on establishing thought leadership in the state of Illinois, by identifying and addressing the current and emerging opportunities related to the inevitable growth of CAV technologies throughout the transportation network. Through the deployment of scalable and sustainable business solutions, facilitating industry education and establishing thought leadership, ILAVA is creating an ecosystem that defines Illinois as #TheFutureStateofMobility.

Perceptions Et Attitudes Face À La Conduite Automobile Dans Un Contexte De Travail Chez Les Policiers En Fonction Et Les Aspirants Policiers, Martin Lavallière, François Bellavance

Rapports de recherche scientifique

La conduite automobile représente une composante importante du travail policier. De la patrouille à la conduite en situation d’urgence, le policier se doit d’être constamment à la recherche d’informations pour lui permettre de préserver sa sécurité derrière le volant et celle de la population qu’il dessert. Des études sur les accidents routiers au travail ont montré que les policiers ne sont pas à l’abri des collisions routières et que celles-ci, lorsqu’elles surviennent, sont potentiellement mortelles. L’objectif de cette étude est de 1) documenter les perceptions et les attitudes face à la conduite automobile en fonction de l’appartenance à un groupe …

Visualizing Statewide Trips: Tools To Leverage Gps Data In Transportation Planning, Nikola Markovic

TREC Project Briefs

The University of Utah has a new data visualization service to offer to state DOTs and other agencies. Using Small Starts funding from the National Institute for Transportation and Communities (NITC), researcher Nikola Markovic and his team have developed a suite of visual analysis tools to demonstrate how GPS trajectory data can help accurately model and analyze mobility trends. These data are typically purchased from vendors, which means that transportation agencies must first understand the benefits before they decide to invest in data acquisition.

Guidelines For Using Streetlight Data For Planning Tasks, Hong Yang, Mecit Cetin, Qingyu Ma

Computational Modeling & Simulation Engineering Faculty Publications

The Virginia Department of Transportation (VDOT) has purchased a subscription to the StreetLight (SL) Data products that mainly offer origin-destination (OD) related metrics through crowdsourcing data. Users can manipulate a data source like this to quickly estimate origin-destination trip tables. Nonetheless, the SL metrics heavily rely on the data points sampled from smartphone applications and global positioning services (GPS) devices, which may be subject to potential bias and coverage issues. In particular, the quality of the SL metrics in relation to meeting the needs of various VDOT work tasks is not clear. Guidelines on the use of the SL metrics …

"I Like It, But I Don't Use It": Impact Of Carsharing Business Models On Usage Intentions In The Sharing Economy, Ruediger Hahn, Felix Ostertag, Adrian Lehr, Marion Buettgen, Sabine Benoit

Research Collection Lee Kong Chian School Of Business

Carsharing is often promoted as a potentially environmental-friendly alternative to individual car ownership. However, various carsharing programs have displayed limited success in the past. An initial field study of a new carsharing service is such a story of failure: The introduction of this new service at a medium-sized German university generated unexpectedly low adoption rates so that the service was eventually scaled down and then suspended. Quantitative field study results as well as additional qualitative focus groups reveal that missing compatibility is a key barrier to adoption. Drawing on extant conceptual frameworks of user participation in sharing business models, a …

Visual Exploration Of Utah Trajectory Data And Their Applications In Transportation, Seth Miller, Zachary Vander Laan, Yinhu Wang, Nikola Markovic

TREC Final Reports

Transportation agencies have an opportunity to leverage massive GPS trajectory data to support their analyses and enhance their decision making. However, these data are typically purchased from vendors, which means that transportation agencies must understand their benefits before they decide to invest in data acquisition. To help transportation agencies better understand the tremendous value of trajectory data, the PI of the project acquired Utah GPS trajectory data from one of the leading GPS data providers and conducted visual analyses demonstrating applications of trajectory data in various areas of transportation. The analyses focused on (a) evaluating the data itself by exploring …

Using Reinforcement Learning To Minimize The Probability Of Delay Occurrence In Transportation, Zhiguang Cao, Hongliang Guo, Wen Song, Kaizhou Gao, Zhengghua Chen, Le Zhang, Xuexi Zhang

Research Collection School Of Computing and Information Systems

Reducing traffic delay is of crucial importance for the development of sustainable transportation systems, which is a challenging task in the studies of stochastic shortest path (SSP) problem. Existing methods based on the probability tail model to solve the SSP problem, seek for the path that minimizes the probability of delay occurrence, which is equal to maximizing the probability of reaching the destination before a deadline (i.e., arriving on time). However, they suffer from low accuracy or high computational cost. Therefore, we design a novel and practical Q-learning approach where the converged Q-values have the practical meaning as the actual …

The Southwest Corridor Light Rail Project, Fiona Cundy, Patrick Sweeney

PSU Transportation Seminars

The Southwest Corridor Light Rail Project is an expansion of the MAX light rail system into Southwest Portland, Tigard and Tualatin. Not only will the project add 11 miles of light rail track and 13 stations to the system, it also includes new bicycle facilities, sidewalks, safer crossings, improvements to local bus service, and significant upgrades to stormwater treatment infrastructure. As a cooperative effort between regional partners, the project is seen as a catalyst to help realize broader shared goals of fostering equitable communities, ensuring healthy environments, and providing robust mobility options for all modes. Currently in the planning and …

Foot Traffic & Walkable Urbanism, Ember Smith, Mary Blankenship, Caitlin Saladino, William E. Brown

Transportation & Infrastructure

This fact sheet highlights the performance and expansion of WalkUPs (regionally significant, walkable areas) with a focus on Denver, Los Angeles, Orlando, Phoenix, and Las Vegas as detailed in Foot Traffic Ahead: Ranking Walkable Urbanism in America’s Largest Metros, a report by George Washington University.

E-Grocery Home Delivery And The Freight & Travel Demands Of Multifamily Dwellings, Katherine Keeling, Gabby Abou-Zeid

PSU Transportation Seminars

Double Feature: E-Grocery Home Delivery and the Freight & Travel Demands of Multifamily Dwellings

E-Grocery Home Delivery Impacts on Food Access and Equity

The adoption of e-grocery home delivery (HD) has the potential to change social norms of acquiring household foods and necessities. In light of recent interest in food deserts, a case study of Portland, OR reviews the new elements of inclusion, exclusion, and value created by the service of four major e-grocery businesses: Shipt, Instacart, Walmart, and Amazon Prime Now. These e-grocers are reviewed in terms of service areas, pricing, and inventory choice, as these are key factors …

Webinar: New Travel Demand Modeling For Our Evolving Mobility Landscape, Reid Ewing, Sadegh Sabouri

TREC Webinar Series

Conventional four-step travel demand models are used by nearly all metropolitan planning organizations (MPOs), state departments of transportation, and local planning agencies, as the basis for long-range transportation planning in the United States. A flaw of the four-step model is its relative insensitivity to the so-called D variables. The D variables are characteristics of the built environment that are known to affect travel behavior. The Ds are development density, land use diversity, street network design, destination accessibility, and distance to transit. In this seminar, we will explain how we developed a vehicle ownership model (car shedding model), an intrazonal travel …

Final Project Report, David Noyce, Yu (Fred) Song

CTEDD Final Project Reports - Archive

No abstract provided.

Understanding The Shared E-Scooter Travels In Austin, Tx, Junfeng Jiao, Shunhua Bai

Research Collection College of Integrative Studies

This paper investigated the travel patterns of 1.7 million shared E-scooter trips from April 2018 to February 2019 in Austin, TX. There were more than 6000 active E-scooters in operation each month, generating over 150,000 trips and covered approximately 117,000 miles. During this period, the average travel distance and operation time of E-scooter trips were 0.77 miles and 7.55 min, respectively. We further identified two E-scooter usage hotspots in the city (Downtown Austin and the University of Texas campus). The spatial analysis showed that more trips originated from Downtown Austin than were completed, while the opposite was true for the …

Neural Approximate Dynamic Programming For On-Demand Ride-Pooling, Sanket Shah, Meghna Lowalekar, Pradeep Varakantham

Research Collection School Of Computing and Information Systems

On-demand ride-pooling (e.g., UberPool, LyftLine, GrabShare) has recently become popular because of its ability to lower costs for passengers while simultaneously increasing revenue for drivers and aggregation companies (e.g., Uber). Unlike in Taxi on Demand (ToD) services – where a vehicle is assigned one passenger at a time – in on-demand ride-pooling, each vehicle must simultaneously serve multiple passengers with heterogeneous origin and destination pairs without violating any quality constraints. To ensure near real-time response, existing solutions to the real-time ride-pooling problem are myopic in that they optimise the objective (e.g., maximise the number of passengers served) for the current …

Promoting Environmental Justice Populations’ Access To Opportunities With Suburban Boomtowns: An Interdisciplinary Mixed-Methods Approach To Addressing Infrastructure Needs, Jandel Crutchfield, Courtney Cronley, Kate Hyun, Erin Findley, Mehrdad Arabi

TREC Final Reports

This study used a community-engaged interdisciplinary approach to assess the gaps between economic growth and transportation infrastructure development, and the impact of potential gaps on access to opportunities for environmental justice populations within North Central Texas, where population growth has increased over 100% since 2000. The interdisciplinary team, comprised of social work and civil engineering researchers, in partnership with the regional homeless coalition, measured residents’ perspectives of the economic growth in the area over the past decade, the extent to which transportation infrastructure has matched the economic growth, and the implications for access to affordable quality housing, employment, quality public …

When Growth Outpaces Infrastructure: Access To Opportunities In Suburban Boomtowns, Jandel Crutchfield, Courtney Cronley, Kate Hyun

TREC Project Briefs

In the last twenty years, the population increased over 100% in Collin County, Texas. The county is projected to have over 2.4 million residents by 2050 -- more than three times its population in 2010. When enough people flock to an area to call it a boomtown, the population tends to grow much faster than the infrastructure to support it. Where does that leave mobility options for residents? Researchers from the University of Texas at Arlington’s (UTA) School of Social Work and College of Engineering partnered with the Collin County Homeless Coalition (CCHC) to investigate gaps in transportation services and …

Harmonizing Climate Change Mitigation And Adaptation In Transportation And Land-Use Planning In California Cities, Serena E. Alexander, Asha Weinstein Agrawal, Ashley M. Hooper, Michael R. Boswell

Mineta Transportation Institute

Abstract: Recent extreme weather events in California—wildfires, drought, and flooding—make abundantly clear the need to plan effective responses to both the causes and the consequences of climate change. A central challenge for climate planning efforts has been identifying transportation and land-use (TLU) strategies that simultaneously reduce greenhouse gas emissions (“mitigation”) and adapt communities so that they will be less affected by the adverse impacts of climate change (“adaptation”). Sets of policies that collectively address both mitigation and adaptation are known as “integrated actions.” This study explores municipal climate planning in California to determine whether cities incorporate integrated actions into their …

Webinar: Assessing The Impacts Of New Mobility On Cities, Rebecca Steckler, Rebecca Lewis

TREC Webinar Series

Autonomous vehicles (AVs), e-commerce and the sharing economy are rapidly changing land use and transportation in cities. City leaders and professional planners are wondering how these technologies will change how they plan and operate cities. For the past year, the University of Oregon’s Urbanism Next Center and Sustainable Year Program focused staff and students on helping the cities of Gresham and Eugene better understand the potential impacts of a wide-range of topics and study a variety of potential responses to address the challenges and take advantage of the opportunities. These topics include issues related to safety, social equity, active transportation, …

Bicycling Toward Equity: Opportunities, Barriers, And Policies For Vulnerable Groups, Jennifer Dill, John Macarthur, Nathan Mcneil

PSU Transportation Seminars

This seminar includes two presentations: Bicycling and Bikeshare Among Women of Color in Three U.S. Cities: Barriers and Opportunities, by Jennifer Dill and Adaptive Bikeshare: Expanding Bikeshare to People with Disabilities and Older Adults, by John MacArthur and Nathan McNeil.

Bicycling and Bikeshare Among Women of Color in Three U.S. Cities: Barriers and Opportunities:

Bike share programs in the U.S. have been criticized because they have been used more by men, younger, white, and higher-income people. At the same time, most large U.S. cities experience a gender gap in bicycling. This presentation examines the barriers to and motivations for …