Abstract

In the United States, flooding related crashes have exposed the vulnerability of transport networks. Without realizing the depth of a flooded roadway, some may attempt to cross. At night during heavy storms, determining if a road is flooded is especially difficult. Only 18–24 inches of moving water are needed to sweep away a truck, and only 6 inches are needed to carry away a small car. Louisiana’s geographic location places the state in a unique position to receive both frontal tropical hurricanes and large air masses, which may result in high air moistures in almost any direction and drop rain with heavy intensity. In 2016, 12% of flooding related crashes occurred in Louisiana. During 2010–2016, flooding resulted in a total of 449 crashes in Louisiana with a total of 22 fatalities. This study collected seven years (2010–2016) of flooding related crash data to identify the key contributing factors. The findings show that two-way roadway with separation, rear-end crashes, higher average precipitation, and driver violations are frequently seen in the generated rules. This study provides a comprehensive picture of flooding related to traffic crashes; thus, targeting suitable countermeasures can be devised to reduce the number of crashes.

摘要

在美国，与洪水相关的事故暴露了交通网络的脆弱性。在没有意识到被淹道路的深度的情况下，有些人可能会试图穿越。在大风暴期间的夜间，确定道路是否被淹特别困难。一辆卡车只需要 18-24 英寸的流动水，而一辆小型汽车只需要 6 英寸。路易斯安那州的地理位置使该州处于独特的位置，可以同时接收锋面热带飓风和大气团，这可能导致几乎任何方向的空气湿度高，降雨强度大。2016 年，12% 的与洪水相关的车祸发生在路易斯安那州。2010 年至 2016 年期间，路易斯安那州的洪水共导致 449 起车祸，共造成 22 人死亡。本研究收集了七年（2010-2016 年）与洪水相关的碰撞数据，以确定关键的影响因素。研究结果表明，在生成的规则中经常会看到双向道路分离、追尾事故、更高的平均降水量和驾驶员违规行为。这项研究提供了与交通事故相关的洪水的全面情况；因此，可以设计有针对性的适当对策来减少碰撞次数。