An Estimation of the Effects of Implementation of Policy for Road Network Disruptions by Urban Floods in Developing Country

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  • 開発途上国における都市洪水発生時の道路ネットワーク寸断に対する政策実施効果の推計
  • 審査付 開発途上国における都市洪水発生時の道路ネットワーク寸断に対する政策実施効果の推計
  • シンサ ツキ カイハツ トジョウコク ニ オケル トシ コウズイ ハッセイジ ノ ドウロ ネットワーク スンダン ニ タイスル セイサク ジッシ コウカ ノ スイケイ

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<p>In recent years, urban activities are deeply affected by flooding are occurred frequently, and increased flood damages in developing countries. Although direct damages of urban flood like the inundation for housing have been analyzed, indirect damage such as the influence on the urban activity by loss of the connectivity of the transport network has not been sufficiently analyzed. Therefore, the objective of this study is to reveal the impacts of implementation of policy for the road network disruptions. Firstly, each road section compared to the traffic volume of each link for understanding the priority of the rank of implementation in countermeasures. And then, the policy of the transport sector in mitigating urban floods impacts was evaluated. Consequently, the study found that the policy of raising arterial roads could shorten average travel time by 20 minutes during flooding in the zones along the river. This benefit is valued at about 227 million THB for 20 years. Finally, this study suggests that it is essential to select appropriate policy on the transport sector for mitigating urban flood impacts, focusing on the vulnerability of transport networks.</p>

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