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. / A Thesis submitted to the Department of Civil and Environmental Engineering in partial fulfillment of the requirements for the degree of Master of
Science. / Fall Semester 2015. / November 6, 2015. / Accessibility, Aging, GIS, Optimization, p-median, Spatial Optimization / Includes bibliographical references. / Eren Erman Ozguven, Professor Directing Thesis; Ren Moses, Committee Member; John O. Sobanjo, Committee Member.
| Identifer | oai:union.ndltd.org:fsu.edu/oai:fsu.digital.flvc.org:fsu_291323 |
| Contributors | Ozel, Hidayet (authoraut), 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) |
| Publisher | Florida State University |
| Source Sets | Florida State University |
| Language | English, English |
| Detected Language | English |
| Type | Text, text |
| Format | 1 online resource (158 pages), computer, application/pdf |
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