본문

Accessibility in Motion: Measuring Real-Time Accessibility With High-Resolution Data- [electronic resource]
Accessibility in Motion: Measuring Real-Time Accessibility With High-Resolution Data - [el...
Contents Info
Accessibility in Motion: Measuring Real-Time Accessibility With High-Resolution Data- [electronic resource]
Material Type  
 단행본
 
0016935523
Date and Time of Latest Transaction  
20240214101943
ISBN  
9798380370356
DDC  
338.9
Author  
Liu, Luyu.
Title/Author  
Accessibility in Motion: Measuring Real-Time Accessibility With High-Resolution Data - [electronic resource]
Publish Info  
[S.l.]: : The Ohio State University., 2023
Publish Info  
Ann Arbor : : ProQuest Dissertations & Theses,, 2023
Material Info  
1 online resource(197 p.)
General Note  
Source: Dissertations Abstracts International, Volume: 85-03, Section: B.
General Note  
Advisor: Miller, Harvey J.
학위논문주기  
Thesis (Ph.D.)--The Ohio State University, 2023.
Restrictions on Access Note  
This item must not be sold to any third party vendors.
Abstracts/Etc  
요약Accessibility is a fundamental measure in public transportation research and policy making; it represents a user's ability to travel and reach destination afforded by a public transit service. Accessibility plays a crucial role in a public transit service's useability, a community's livability, and residents' well-being. Higher accessibility can promote modal shifts from other unsustainable transportation to public transit, which decreases the carbon and air pollution, curbs congestion, and improves social equity and public health. However, many US cities still have major gaps in public transit accessibility and reliability. The issue of inadequate public transportation accessibility and reliability also remains a grave concern for scientific and planning communities: the lack of in-depth, holistic, and reliable understanding of accessibility impedes our ability to make informed and evidence-based decisions during both the planning and operation phases.In this dissertation, I introduce a new research framework - real-time accessibility - to better understand and improve public transit systems with high-resolution real-time geospatial data. The framework utilizes real-time information to assess different dimensions of system performance of public transit services and behaviors of passengers in the systems. I investigate four empirical questions with the framework based on the Central Ohio Transit Authority (COTA) bus system in Columbus, Ohio, a low-frequency bus system in a typical mid-size car-dependent city. First, I study the impact of new dockless scooter sharing services on local public transit systems. While they can significantly improve accessibility, equity and sustainability issues such as uneven distribution, high cost, and low capacity limit the collaboration between public transit and scooters. Second, I study the unreliability of public transit systems and the unrealistic assumptions made by schedule-based and retrospective-based measures used by researchers and planners leveraging new high-resolution public transit data. I introduce a more realistic measure - realizable real-time accessibility - based on the space-time prism concept from time geography. I find that public transit accessibility is highly unreliable, and realizable accessibility is the most conservative and realistic measure, which provides a more robust guide for transit planning. Third, I examine the impacts of short- and longterm disruptions on the accessibility and reliability in the COTA bus system with the same realizable accessibility and unreliability measures introduced in the last paper. I study Ohio State football games and the COVID-19 as examples for short- and long-term disruptions, respectively. The method effectively detects that football games caused system disturbances and COVID-19 had persistent negative impacts on accessibility and reliability. Fourth, in response to the higher frequencies and uncertainties of future disruptions, I introduce accessibility derivative, a measure that calculates the change in system-wide accessibility from an elemental change in the transit system's inputs. The system provides crucial information about the direct impacts of potential disruptions and service cuts on overall accessibility, as well as each route's contribution to accessibility. This dissertation makes conceptual and analytical contributions to offer a more realistic, holistic, and evidence-based approach to evaluate public transit accessibility and reliability. Furthermore, the methods and results can also guide planners and policymakers in evaluating and redesigning transit systems to improve accessibility, service performance, and capacity.
Subject Added Entry-Topical Term  
Sustainability.
Subject Added Entry-Topical Term  
Transportation.
Subject Added Entry-Topical Term  
Geography.
Subject Added Entry-Topical Term  
Geographic information science.
Subject Added Entry-Topical Term  
Urban planning.
Index Term-Uncontrolled  
Accessibility
Index Term-Uncontrolled  
Public transit
Index Term-Uncontrolled  
Geospatial data science
Index Term-Uncontrolled  
Micromobility
Index Term-Uncontrolled  
Real-time data
Index Term-Uncontrolled  
Reliability
Added Entry-Corporate Name  
The Ohio State University Geography
Host Item Entry  
Dissertations Abstracts International. 85-03B.
Host Item Entry  
Dissertation Abstract International
Electronic Location and Access  
로그인 후 원문을 볼 수 있습니다.
소장사항  
202402 2024
New Books MORE
최근 3년간 통계입니다.

Detail Info.

  • Reservation
  • Not Exist
  • My Folder
  • First Request
  • 비도서대출신청
  • 야간 도서대출신청
Material
Reg No. Call No. Location Status Lend Info
TF08010 전자도서
마이폴더 부재도서신고 비도서대출신청

* Reservations are available in the borrowing book. To make reservations, Please click the reservation button

해당 도서를 다른 이용자가 함께 대출한 도서

Related Popular Books

로그인 후 이용 가능합니다.