Flooding can destabilize vehicles which might, in turn, exacerbate the negative effects of floods when vehicles are swept away by flows, and lead to economic loss and fatalities. In order to suitably manage floods, it is necessary to determine the risk of instability to which vehicles in flood-prone areas are subject. This paper develops a methodology to estimate this risk based on the characteristics of floods and the vehicle fleet located in potential flood-prone areas. This risk is determined by the statistical integral of the instability hazard and vehicles' vulnerability. The instability hazard was established by a stability function of partially submerged cars and flood frequency, while vulnerability was calculated by combining the susceptibility and exposure of cars. Our methodology was applied in the towns of Alfafar and Massanassa (Spain). It found that the annualized instability risk due to flooding could be relatively high on most streets and roads, with values reaching the order of 8.4 at-risk vehicles per hectare/year.

中文翻译：

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评估因洪水导致车辆不稳定的风险

洪水会破坏车辆的稳定性，反过来，当车辆被水流冲走时，可能会加剧洪水的负面影响，并导致经济损失和死亡。为了适当地管理洪水，有必要确定洪水易发地区的车辆所面临的不稳定风险。本文根据洪水的特征和位于潜在洪水易发地区的车队，开发了一种估计这种风险的方法。这种风险是由不稳定危险和车辆脆弱性的统计积分决定的。不稳定危险由部分淹没的汽车和洪水频率的稳定性函数建立，而脆弱性通过结合汽车的敏感性和暴露来计算。我们的方法被应用于 Alfafar 和 Massanassa（西班牙）镇。研究发现，在大多数街道和道路上，由于洪水导致的年化不稳定风险可能相对较高，达到每公顷每年 8.4 辆处于危险中的车辆的数量级。