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Aging Population-Focused Transportation Accessibility Assessment of Critical Facilities in Florida

Title: Aging Population-Focused Transportation Accessibility Assessment of Critical Facilities in Florida.
Name(s): Ozel, Hidayet, author
Ozguven, Eren Erman, professor directing thesis
Moses, Ren, committee member
Sobanjo, John Olusegun, 1958-, committee member
Florida State University, degree granting institution
College of Engineering, degree granting college
Department of Civil and Environmental Engineering, degree granting department
Type of Resource: text
Genre: Text
Issuance: monographic
Date Issued: 2015
Publisher: Florida State University
Place of Publication: Tallahassee, Florida
Physical Form: computer
online resource
Extent: 1 online resource (158 pages)
Language(s): English
Abstract/Description: A significant responsibility of officials involved in transportation planning is ensuring people's accessibility to critical facilities such as multi-modal terminals and emergency shelters. This challenging task depends on the available transportation infrastructure as well as the overall population, traffic, roadway and regional characteristics. Such planning takes on additional complexity when aging populations are considered because any extra time they incur reaching these facilities can be especially confounding in light of their potential health and other safety concerns. As such, there is a need for state/federal transportation plans to have a transportation assessment component that specifically focuses on the accessibility of aging people ('the aging population' can be thought of as those people aged 65+ in this study) to critical facilities. To accomplish this goal, this study first describes a Geographical Information Systems (GIS)-based methodology for measuring the aging population-focused accessibility to multi-modal facilities in Florida. Spatially detailed population block- and county-based accessibility scores are calculated with respect to key intermodal facility types (airports, bus stations, and railway and ferry stations), and visually assessed via GIS maps. Second, a spatial optimization model is presented which focuses on maximizing the accessibility of aging populations to the emergency shelters. For this purpose, a p-median optimization model is proposed in order to minimize the transportation cost (travel time or roadway network distance costs between the origins –centroids of population blocks- and destinations –emergency shelters) in the transportation network, and therefore providing maximum accessibility for aging adults to the emergency shelters. In this context, different transportation costs are used: (a) roadway network distance, (b) free flow travel time, and (c) congested travel time. This model is also extended towards a capacitated p-median model with hubs, which makes it possible to conduct an extensive evaluation of possible intermediate hub locations that can have a significant effect on the accessibility of those shelters. The knowledge obtained from this accessibility analysis can successfully contribute to the development of more reliable aging population-focused transportation plans, as the analysis points to specific areas where accessibility could be improved as well as those candidate locations that can be serve as additional emergency shelters and intermediate hubs.
Identifier: FSU_2015fall_Ozel_fsu_0071N_12963 (IID)
Submitted Note: A Thesis submitted to the Department of Civil and Environmental Engineering in partial fulfillment of the requirements for the degree of Master of Science.
Degree Awarded: Fall Semester 2015.
Date of Defense: November 6, 2015.
Keywords: Accessibility, Aging, GIS, Optimization, p-median, Spatial Optimization
Bibliography Note: Includes bibliographical references.
Advisory Committee: Eren Erman Ozguven, Professor Directing Thesis; Ren Moses, Committee Member; John O. Sobanjo, Committee Member.
Subject(s): Engineering
Transportation -- Planning
Persistent Link to This Record:
Owner Institution: FSU

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Ozel, H. (2015). Aging Population-Focused Transportation Accessibility Assessment of Critical Facilities in Florida. Retrieved from