Department of Transportation Engineering, University of Seoul, Seoul, South Korea.
Department of Geography Education, University of Education, Winneba, Ghana.
Traffic Inj Prev. 2022;23(5):308-314. doi: 10.1080/15389588.2022.2066658. Epub 2022 May 6.
This study employs a data mining approach to discover hidden groups of crash-risk factors leading to each bus/minibus crash severity level on pothole-ridden/poor roads categorized under different lighting conditions namely daylight, night with streetlights turned on, and night with streetlights turned off/no streetlights.
The bus/minibus data employed contained 2,832 crashes observed on poor roads between 2011 and 2015, with variables such as the weather, driver, vehicle, roadway, and temporal characteristics. The data was grouped into three based on lighting condition, and the association rule data mining approach was applied.
Overall, most rules pointing to fatal crashes included the hit-pedestrian variable, and these crashes were more frequent on straight/flat roads at night. While median presence was highly associated with severe bus/minibus crashes on dark-and-unlighted roads, median absence was correlated with severe crashes on dark-but-lighted roads. On-street parking was identified as a leading contributor to property-damage-only crashes in daylight conditions.
The study proposed relevant countermeasures to provide practical guidance to safety engineers regarding the mitigation of bus/minibus crashes in Ghana.
本研究采用数据挖掘方法，揭示导致坑洼/路况较差道路上每起公共汽车/小型巴士碰撞严重程度的隐藏风险因素群，这些道路的照明条件分别为白天、路灯开启的夜间和路灯关闭/无路灯的夜间。
本研究使用的公共汽车/小型巴士数据包含 2011 年至 2015 年期间在路况较差的道路上观察到的 2832 起事故，其中包括天气、驾驶员、车辆、道路和时间特征等变量。数据根据照明条件分为三组，并应用关联规则数据挖掘方法。
总体而言，指向致命事故的大多数规则都包含行人被撞变量，这些事故在夜间的直道/平道上更为频繁。而中位数的存在与黑暗无照明道路上严重的公共汽车/小型巴士碰撞高度相关，中位数的缺失则与黑暗但有照明的道路上的严重碰撞相关。路边停车被确定为白天仅造成财产损失事故的主要原因。
本研究提出了相关的对策建议，为加纳的安全工程师提供了有关减轻公共汽车/小型巴士碰撞的实用指导。
