Geographical risk analysis based path selection for automatic, speedy, and reliable evacuation guiding using evacuees’ mobile devices

Hara, Takanori; Sasabe, Masahiro; Kasahara, Shoji

doi:10.1007/s12652-018-0826-z

Cited by 10 publications

(21 citation statements)

References 15 publications

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“…low) level of the fire safety. There are several studies on earthquake emergencies in Italy and Japan [20,32,37]. Bernardini et al, considered multiple safety factors for evacuees (e.g., street vulnerability, street blockages probability, and crowding conditions along paths) and proposed a dynamic guidance tool based on Dijkstra's algorithm with the integrated safety index [37].…”

Section: Geographical Risk Analysis and Path Selectionmentioning

confidence: 99%

“…The detailed definition will be given in Appendix A. In [20], Hara et al proposed a geographical risk analysis-based path selection scheme that provides a speedy and safe route for each evacuee with the help of the road blockage probability.…”

Section: Geographical Risk Analysis and Path Selectionmentioning

confidence: 99%

“…There have been several studies on the indirect/direct evacuation guiding systems: indirect guiding based on signage systems [21][22][23] and direct evacuation guiding systems [18][19][20]. The signage system is one of the building attributions in emergencies as well as ordinary conditions, and provides evacuees with indirect suggestion about evacuation [21,23].…”

Section: Evacuation Guiding and Human Interactionsmentioning

confidence: 99%

“…The post-disaster approaches include evacuation guiding [18][19][20] and signage systems [21][22][23]. In comparison with the pre-disaster approaches, the post-disaster ones can flexibly deal with dynamic environmental changes due to the disaster for supporting the evacuees' decision making under their high-stressed situation.…”

Section: Introductionmentioning

confidence: 99%

“…We first formulate the refuge assignment problem as a two-step integer linear program (ILP) under the input of route candidates between evacuees and their possible refuges, which can be solved by the existing solver, CPLEX [24]. As for the route candidates, we also propose a speedy and reliable path selection scheme, which is an extended version of the existing path selection scheme [20] to improve the route reliability.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Capacitated Refuge Assignment for Speedy and Reliable Evacuation

Hara

Sasabe

Matsuda

et al. 2020

IJGI

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When a large-scale disaster occurs, each evacuee should move to an appropriate refuge in a speedy and safe manner. Most of the existing studies on the refuge assignment consider the speediness of evacuation and refuge capacity while the safety of evacuation is not taken into account. In this paper, we propose a refuge assignment scheme that considers both the speediness and safety of evacuation under the refuge capacity constraint. We first formulate the refuge assignment problem as a two-step integer linear program (ILP). Since the two-step ILP requires route candidates between evacuees and their possible refuges, we further propose a speedy and reliable route selection scheme as an extension of the existing route selection scheme. Through numerical results using the actual data of Arako district of Nagoya city in Japan, we show that the proposed scheme can improve the average route reliability among evacuees by 13.6% while suppressing the increase of the average route length among evacuees by 7.3%, compared with the distance-based route selection and refuge assignment. In addition, we also reveal that the current refuge capacity is not enough to support speedy and reliable evacuation for the residents.

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