Investigating transport network vulnerability by capacity weighted spectral analysis

Bell, M.G.; Kurauchi, Fumitaka; Perera, Supun; Wong, Ka-Io

doi:10.1016/j.trb.2017.03.002

Cited by 97 publications

(51 citation statements)

References 21 publications

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“…The sparse linkages between these port communities indicate the fact that access to each other is relatively poor. The proposed eigenvalue decomposition method in this paper is an extension to the earlier work by Bell et al (2017). As this method is computationally tractable, it could be conveniently applied to large-scale transportation networks.…”

Section: Editorialmentioning

confidence: 99%

Special issue on ‘WTC 2018 Beijing: recent advances in maritime operations and management’

Huang

2019

Maritime Policy & Management

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Section: Editorialmentioning

confidence: 99%

Special issue on ‘WTC 2018 Beijing: recent advances in maritime operations and management’

Huang

2019

Maritime Policy & Management

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“…Public transport systems are constructed as complex networks in a topological vulnerability analysis. Some of the constructed networks are directed or weighted [3,42,43], while others are undirected and unweighted [6]. To identify critical nodes, topological measurements have been introduced in terms of node degree, betweenness centrality and node clustering [44].…”

Section: Vulnerability Of Public Transport Systemmentioning

confidence: 99%

Sustainable Development of Urban Rail Transit Networks: A Vulnerability Perspective

et al. 2019

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Urban rail transit (URT) systems are critical to modern public transportation services. Unfortunately, disruptions in URT systems can lead to dysfunction and threaten sustainable development. This study analyses URT network sustainability from a vulnerability perspective. Two network attack scenarios, including random attacks and intentional attacks, are designed to assess different kinds of disruptions to URT networks. Under random attacks, nodes are randomly removed from the network. In contrast, under intentional attacks, key nodes are identified and removed based on topological metrics and passenger flow volume. Then, URT network vulnerability is evaluated by quantifying the changes in network efficiency and structural integrity under the network attacks from a spatio-temporal point of view. The real-world case of the Shanghai URT system from 1993 to 2020 is used to illustrate the vulnerability in the evolution of the URT system. The results indicate that the URT network is increasingly fault-tolerant and structurally robust over time. The URT network is more vulnerable to intentional attacks than to random failures. Additionally, there are significant spatial differences in the vulnerability of Shanghai URT network. Stations in the central activity zone (CAZ) are more fault-tolerant and robust than stations located outside of the CAZ. Furthermore, stations with large centrality and greater passenger flow volumes and lines with many key nodes and greater passenger flow volumes, are vulnerable to disruptions in the URT networks. This study provides a new index to comprehensively quantify node centrality; it also fills a research gap by analysing the vulnerability of URT networks based on both longitudinal and spatial patterns. Finally, this paper highlights significant practical implications for the sustainable development of URT networks, as well as the sustainable development of public transportation services.

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“…[1]) and is still under research (cf. [2]). The Transportation Research Board (TRB) of the National Academies of Science -Engineering -Medicine in the United States, for example, periodically publishes a detailed overview of their corresponding activities (cf.…”

Section: Introductionmentioning

confidence: 99%

“…depending on network topology and link failure probabilities? (2) What are the most critical links in the network in terms of negatively affecting the isolation risk of many nodes when becoming unavailable?…”

Section: Introductionmentioning

confidence: 99%

Terminal reliability of road networks with multiple destination options

Neumann¹,

Behrisch²

2018

Int. J. SAFE

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In crisis situations such as natural disasters, it is essential that people can be reached by fire and rescue services as well as police forces. Moreover, access to food and water supply should be ensured for everyone, for instance. In all cases, people depend on the (potentially damaged) road infrastructuremodelled as a graph network -that for all nodes in the network should provide connections to at least one supply node of each type (i.e., fire department, hospital etc.) even if some links in the network are currently unavailable. Assuming that there are multiple supply nodes per type among the whole network, the present contribution discusses the risk that a given node of the network becomes isolated from all of these supply nodes depending on the topological structure of the network. For this purpose, the well-known concept of terminal reliability is adapted to the situation with multiple possible destinations which is realized by appropriately modifying the original graph. An algorithm is presented that allows finding all relevant cut sets in the modified graph which can be used for computing the probability R sys that a given node remains connected to at least one of the supply nodes considered depending on the link failure probabilities p i . A simple clustering approach together with Boolean algebra finally yields explicit numbers for R sys depending on p i . The whole concept is demonstrated based on an illustrative example showing the different endangerment among the nodes of the network including a discussion about the specific criticality of each network link with regard to ensuring the connectivity between supply nodes and other nodes. Thus, by identifying critical links and quantifying the risk of isolation for all nodes in the network, the present contribution provides useful tools for prevention in crisis management.

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Investigating transport network vulnerability by capacity weighted spectral analysis

Cited by 97 publications

References 21 publications

Special issue on ‘WTC 2018 Beijing: recent advances in maritime operations and management’

Special issue on ‘WTC 2018 Beijing: recent advances in maritime operations and management’

Sustainable Development of Urban Rail Transit Networks: A Vulnerability Perspective

Terminal reliability of road networks with multiple destination options

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