| 基于泰森多边形的事故多发点识别方法* |
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| 引用本文： | 刘戎阳,郝妍熙,胡华,刘志钢,汪涛.基于泰森多边形的事故多发点识别方法*[J].中国安全生产科学技术,2022,18(11):26-31. |
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| 作者姓名： | 刘戎阳 郝妍熙 胡华 刘志钢 汪涛 |
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| 作者单位： | （1.上海工程技术大学 城市轨道交通学院，上海 201620；2.上海交通大学 船舶海洋与建筑工程学院，上海 200240） |
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| 基金项目： | * 基金项目: 国家自然科学基金项目（52072235） |
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| 摘 要： | 为解决传统的热点分析方法无法识别相对独立的事故多发点，且识别结果受极值影响较大的问题，提出1种基于泰森多边形的事故多发点识别方法，基于2018年江苏省盐城市交通事故数据，用泰森多边形划分空间统计单元，依据单元面积和其内部事故数量的比值识别事故多发点，补充相对独立的事故多发区域，并用缓冲区修正多边形的形状。研究结果表明:此方法识别结果能有效避免极值的影响，能更准确地识别出事故多发点，更有效地为道路交通安全管理提供依据。
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| 关 键 词： | 城市交通 交通安全 事故多发点 泰森多边形 |
Identification method of accident-prone locations based on Thiessen polygon |
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| LIU Rongyang,HAO Yanxi,HU Hua,LIU Zhigang,WANG Tao.Identification method of accident-prone locations based on Thiessen polygon[J].Journal of Safety Science and Technology,2022,18(11):26-31. |
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| Authors: | LIU Rongyang HAO Yanxi HU Hua LIU Zhigang WANG Tao |
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| Affiliation: | (1.School of Urban Rail Transit,Shanghai University of Engineering Science,Shanghai 201620,China;2.School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiaotong University,Shanghai 200240,China) |
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| Abstract: | In order to solve the problem that the traditional hot spot analysis methods cannot identify the relatively independent accident-prone locations,and the identification results are greatly affected by the extreme values,a method for identifying the accident-prone locations based on Tyson polygon was proposed.Based on the traffic accident data of Yancheng,Jiangsu in 2018,the spatial statistical units were divided by Tyson polygon,and the accident-prone locations were identified based on the ratio of the unit area and the number of internal accidents.The relatively independent accident-prone areas were supplemented,and the shape of polygon was corrected by the buffer zone.The results showed that the identification results of this method could effectively avoid the influence of extreme values,and more accurately identify the accident-prone locations.It can provide a basis for the road traffic safety management more effectively. |
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| Keywords: | urban traffic traffic safety accident-prone location Thiessen polygon |
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