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    Analysis and Modeling of Simultaneous and Staged Emergency Evacuations

    Source: Journal of Transportation Engineering, Part A: Systems:;2007:;Volume ( 133 ):;issue: 003
    Author:
    Steven I. Chien
    ,
    Vivek V. Korikanthimath
    DOI: 10.1061/(ASCE)0733-947X(2007)133:3(190)
    Publisher: American Society of Civil Engineers
    Abstract: Disaster response in areas of high population density is centered on efficient evacuation of people and/or goods. Developing evacuation plans suitable for different levels of urgency based on the intensity of threat is a challenging task. In this study, mathematical models are developed for estimating evacuation time and delay. Evacuation time is the duration required for evacuating all vehicles from a designated region, whereas delay includes queuing and moving delays. The relationship between delay and evacuation time is investigated, and the impact of staged evacuation against simultaneous evacuation is analyzed. An example is provided to demonstrate the applicability of the developed model. A numerical method is adopted to determine the optimal number of evacuation stages. Sensitivity analysis of parameters (e.g., demand density, access flow rate, and evacuation route length) affecting evacuation time and delay is conducted. Results indicate that evacuation time and delay can be significantly reduced if staged evacuation is appropriately implemented.
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      Analysis and Modeling of Simultaneous and Staged Emergency Evacuations

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    http://yetl.yabesh.ir/yetl1/handle/yetl/37973
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    • Journal of Transportation Engineering, Part A: Systems

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    contributor authorSteven I. Chien
    contributor authorVivek V. Korikanthimath
    date accessioned2017-05-08T21:04:58Z
    date available2017-05-08T21:04:58Z
    date copyrightMarch 2007
    date issued2007
    identifier other%28asce%290733-947x%282007%29133%3A3%28190%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/37973
    description abstractDisaster response in areas of high population density is centered on efficient evacuation of people and/or goods. Developing evacuation plans suitable for different levels of urgency based on the intensity of threat is a challenging task. In this study, mathematical models are developed for estimating evacuation time and delay. Evacuation time is the duration required for evacuating all vehicles from a designated region, whereas delay includes queuing and moving delays. The relationship between delay and evacuation time is investigated, and the impact of staged evacuation against simultaneous evacuation is analyzed. An example is provided to demonstrate the applicability of the developed model. A numerical method is adopted to determine the optimal number of evacuation stages. Sensitivity analysis of parameters (e.g., demand density, access flow rate, and evacuation route length) affecting evacuation time and delay is conducted. Results indicate that evacuation time and delay can be significantly reduced if staged evacuation is appropriately implemented.
    publisherAmerican Society of Civil Engineers
    titleAnalysis and Modeling of Simultaneous and Staged Emergency Evacuations
    typeJournal Paper
    journal volume133
    journal issue3
    journal titleJournal of Transportation Engineering, Part A: Systems
    identifier doi10.1061/(ASCE)0733-947X(2007)133:3(190)
    treeJournal of Transportation Engineering, Part A: Systems:;2007:;Volume ( 133 ):;issue: 003
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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