Measuring Robustness and Coverage of Transportation Networks with Multiple Routes and Hubs. Issue 6 (18th August 2022)

• Record Type: Journal Article
• Authors: Auerbach, Jeremy; Kim, Hyun
• Is Part Of: Annals of the American Association of Geographers. Volume 112:Issue 6(2022)
• Page Start: 1741
• Page End: 1760
• Publication Date: 2022-08-18
• Subjects: multiline networks -- network robustness -- network vulnerability -- rail -- transportation; 多线网络 -- 网络稳健性 -- 网络脆弱性 -- 铁路 -- 交通。; ferrocarril -- redes multilíneas -- robustez de la red -- transporte -- vulnerabilidad de la red; Geography -- Periodicals; Environmental sciences -- Periodicals; Geography; Electronic journals; Periodicals; 550
• DOI: 10.1080/24694452.2021.2000357
• Languages: English
• ISSNs: 2469-4452

Abstract

Abstract : Robustness, or the resilience of a system to failures and attacks without changing its mode of operation, is an increasingly important characteristic of networks. Even though there are several measures of network robustness, they are not applicable to networks with several links between the same pair of nodes (multiline networks), such as transportation systems. A local index and a set of global indexes are introduced to capture the robustness of having multiple connections between the same nodes. These new indexes are designed to uncover the potential vulnerabilities of network components (i.e., hubs, terminals, and lines) to possible malfunctions that might not be well identified with traditional connectivity matrix–based methods. Results of these measures are compared with traditional network connectivity and robustness indexes for both simulated networks that vary topologically and are each composed of multiple lines that overlap in connectivity and a set of representative rail systems in the United States. A discussion of the applicability of these new multiline robustness measures for decision makers and transportation planners to prioritize the development, protection, or maintenance of network components is provided.