Theses and Dissertations from UMD

Permanent URI for this communityhttp://hdl.handle.net/1903/2

New submissions to the thesis/dissertation collections are added automatically as they are received from the Graduate School. Currently, the Graduate School deposits all theses and dissertations from a given semester after the official graduation date. This means that there may be up to a 4 month delay in the appearance of a give thesis/dissertation in DRUM

More information is available at Theses and Dissertations at University of Maryland Libraries.

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    Applying Green Complete Streets on Georgia Avenue NW: Redesigning an Urban Right-of-Way for Sustainable Mobility and Urban Water Quality
    (2023) Mejias, Aliya; Ellis, Christopher D.; Plant Science and Landscape Architecture (PSLA); Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)
    The public right-of-way (ROW) makes up nearly one-third of all the public space in cities. With the majority global population expected to reside in cities by 2050, climate change posing a significant threat to urban residents and infrastructure, impervious urban surface impacts on water quality, and knowing traffic fatalities in the US reached a 16-year high, cities must reconsider how this public good can serve people and the environment over to car-centric mobility. Using a segment of Georgia Avenue NW in Washington, DC, this thesis removes automobiles from the ROW to demonstrate how Green Complete Streets, which prioritizes sustainable transportation and urban water quality, can support urban livability on a corridor scale.
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    EXAMINING THE ENVIRONMENTAL, ECONOMIC, SOCIETAL, AND SUSTAINABILITY POTENTIAL OF SHARED MICROMOBILITY USAGE IN THE U.S.
    (2021) Younes, Hannah Nicole; Baiocchi, Giovanni; Geography; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)
    Transportation became the leading sector of carbon dioxide emissions in the United States in 2017 according to the Environmental Protection Agency (EPA). The urgency of reducing emissions from the transportation sector was manifested in the Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report. Moreover, inequality in income and access to resources continues to increase. From an equity and societal standpoint, transportation modes should be affordable, accessible, and convenient. Developments in technology, communication, and mobile computing have shown great potential in managing resources and increasing efficiency. Innovative research is needed to find ways to reduce such emissions. The following dissertation research focuses on a subset of shared mobility called shared micromobility which include station-based bikeshare (SBBS) and dockless e-scooter and bicycle share (DSS & DBS). The first study establishes a relationship between shared micromobility and public transportation. During three planned transit disruptions, close to 1000 additional bikeshare rides were taken. This finding shows promise that a shift to active, low-carbon mobility is possible. The second study focuses on the temporal determinants and environmental impacts of micromobility. Scooter users tend to be less sensitive to whether conditions than bike users, making scooters more competitive with public transit and auto travel. Moreover, scooter users were more sensitive to gasoline price increases, suggesting a potential shift in auto users in favor of micromobility. The third study examines the access of micromobility in six U.S. cities. In cities with well-established micromobility, higher proportions of minorities and higher poverty rates were associated with fewer trips. The implications for societal equity for this low-carbon mobility are discussed. While micromobility is sustainable and has the potential to compete with more established modes of transportation, like public transit and auto travel, there still remain inequities in access among underserved communities to be addressed.