Vulnerability analysis for large-scale and congested road networks with demand uncertainty

Chen, Bi Yu; Lam, William H. K.; Sumalee, Agachai; Li, Qingquan; Li, Zhichun

doi:10.1016/j.tra.2011.11.018

Cited by 107 publications

(89 citation statements)

References 24 publications

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“…For example Taylor and D'Este (2007) and Chen et al (2012) used accessibility and network efficiency indices as metrics of vulnerability to identify the wider socioeconomic consequences of link closure.…”

Section: Vulnerability Assessment Methods and Indicatorsmentioning

confidence: 99%

An assessment method for highway network vulnerability

Rashidy

Grant-Muller

2014

Journal of Transport Geography

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This paper introduces a methodology to assess the level of vulnerability of road transport networks. A new technique based on fuzzy logic and exhaustive search optimisation is used to combine vulnerability attributes with different weights into a single vulnerability index for network links, which may be used to measure the impact of disruptive events. The network vulnerability index is then calculated using two different aggregations: an aggregated vulnerability index based on physical characteristics and an aggregated vulnerability index based on operational characteristics. The former uses link physical properties such as its length and the number of lanes, whilst the latter reflects aspects of the network flow. The application of the methodology on a synthetic network (based on Delft city, Netherland) demonstrates the ability of the technique to estimate variation in the level of vulnerability under different scenarios. The method also allows exploration of how variation in demand and supply impact on overall network vulnerability, providing a new tool for decision makers to understand the dynamic nature of vulnerability under various events. The method could also be used as an evaluation tool to gauge the impact of particular policies on the level of vulnerability for the highway network and highlight weaknesses in the network.

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Section: Vulnerability Assessment Methods and Indicatorsmentioning

confidence: 99%

An assessment method for highway network vulnerability

Rashidy

Grant-Muller

2014

Journal of Transport Geography

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“…In order to identify critical road links, one can rigorously put every link of the network to a test e.g. as in El-Rashidy & Grant-Muller (2014), Scott et al (2006) which is computationally intensive especially in large-scale congested networks as described in Chen et al (2012). In contrast one can also learn from the history and use the information available to make informed decisions after putting them to further testing.…”

Section: Road Networkmentioning

confidence: 99%

Measuring vulnerability of road network considering the extent of serviceability of critical road links in urban areas

Balijepalli

Oppong

2014

Journal of Transport Geography

133

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Road networks are vulnerable to natural disasters such as floods, earthquakes and forest fires which can adversely affect the travel on the network that remains intact after an event. However, not all road links equally affect the travel conditions in a given network; typically some links are more critical to the network functioning than the others. It is noted that the majority of the existing indices designed to measure vulnerability offer a good measure of network-wide accessibility in sparse regional networks, but they rarely consider the extent of serviceability of critical links in dense urban road networks. This paper describes a number of vulnerability indices from the literature, applies them to the case of urban network of York and discusses the results. It proposes a new vulnerability index considering the serviceability of road links and illustrates its computation. Finally, this paper uses the results of the new vulnerability index and outlines a traffic diversion plan in the event of flooding in York using traffic network modelling techniques combined with Geographic Information Systems (GIS) application.

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“…The residence and job location change choice behavior under climate change is as important as travel behavior change, which changes the traffic generation and distribution and then the transportation network performance. In the network performance analysis literature, great contributions have been made to explore improved analysis methods under climate change disasters [17,18] or develop more efficient calculation techniques in the application [19,20]. However, people's residence and job location choice behavior should be addressed in these network performance analyses, neglecting which might lead to inaccurate evaluation results.…”

Section: Introductionmentioning

confidence: 99%

Residence and Job Location Change Choice Behavior under Flooding and Cyclone Impacts in Bangladesh

Rahman³

2015

Sustainability

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Climate change enters significantly into and is shown to be a direct determinant of residence and job location change decisions. Understanding of how people's residence and job location change choice behavior is affected and thus responds to the impacts of climate change is essential for transportation planners and adaptation decision makers. As an addition to the current literature, the main purposes of this paper are to investigate people's residence and job location change choice behavior affected by factors at origin and look into the behavioral differences between coastal and inland people under flooding and cyclone scenarios in Bangladesh. Questionnaire data were surveyed in 14 coastal and inland cities of Bangladesh with an orthogonal design of three flooding/cyclone scenarios. The multinomial Logit model and cross-nested Logit model are proposed to address the above purposes. Results of this study indicate that flooding/cyclone factors and income, land owned, and number of family members significantly affects people's location change choice. In addition, coastal people are also significantly affected by previous experience factors. Furthermore, road connection plays an important role when people choose to change residence locations in coastal areas. It is also found that if there are changes in OPEN ACCESSSustainability 2015, 7 11613 flooding impacts, the inland people will first consider to change their job locations, while the coastal people would consider both job and residence location changes. Results of this work provide policy suggestions on transportation infrastructure investment, shelter planning and construction, and population migration under flood and cyclone impacts as a result of climate change.

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Vulnerability analysis for large-scale and congested road networks with demand uncertainty

Cited by 107 publications

References 24 publications

An assessment method for highway network vulnerability

An assessment method for highway network vulnerability

Measuring vulnerability of road network considering the extent of serviceability of critical road links in urban areas

Residence and Job Location Change Choice Behavior under Flooding and Cyclone Impacts in Bangladesh

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