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A case study of unavoidable accidents of autonomous vehicles

碰撞 速度限制 撞车 危害 工程类 极限(数学) 运输工程 计算机科学 避碰 模拟 计算机安全 数学 数学分析 有机化学 化学 程序设计语言
作者
Z.H. Sun,Miao Lin,Wentao Chen,Bing Dai,Pengfei Ying,Qing Zhou
出处
期刊:Traffic Injury Prevention [Taylor & Francis]
卷期号:25 (1): 8-13 被引量:4
标识
DOI:10.1080/15389588.2023.2255333
摘要

AbstractObjective: Autonomous driving technology eliminates human errors, and thus it is a promising solution for reducing road traffic fatalities and injuries. While future autonomous driving technology may be able to reduce the number of collision accidents, it will not be able to avoid all collision accidents. This study is aimed to demonstrate why some accidents will still be unavoidable even with advanced perceiving and controlling capabilities.Methods: Because fully autonomous vehicles are currently in the laboratory stage, we used the prospective method to study the unavoidable accident of autonomous vehicles. Suitable traffic accident cases were screened from the China In-Depth Accident Study (CIDAS). Videos of the accidents were analyzed and the accidents were reconstructed using PC-Crash software. We assumed that target vehicle possesses near-perfect autonomous driving capabilities. Unavoidable accidents were determined based on vehicle dynamics and traffic constraints. The time from perceiving hazard to collision was calculated for each accident.Results: Among the 112 accidents screened, 15 cases of unavoidable accidents were identified. Three typical cases are presented in detail in this study. Based on the reasons why the target vehicles cannot avoid the collisions, we classified the unavoidable accidents into time-limit type and space-limit type. Time-limit means that vehicle cannot stop or steer out of danger in time, and space-limit means that the traffic environment does not have sufficient space for vehicle to avoid collision.Conclusions: Collision accidents will still occur even with perfect autonomous driving technology. We used the prospective method to investigate scenarios and characteristics of unavoidable accidents of autonomous vehicles. The time-limit type and the space-limit type were identified as two categories of unavoidable accidents. For the time-limit unavoidable accidents, the time from perceiving hazard to collision is typically not longer than 1.5s. The characteristics of unavoidable accidents and the estimated pre-crash warning time can provide some reference for establishing future occupant protection strategies. This study also showed the limitations of active safety and the necessity of passive safety.Keywords: Autonomous vehiclesaccident analysisunavoidable accidentsoccupant protection AcknowledgmentsThe authors would like to thank Mr. Xudong Li and Mr. Peng Wang for their contributions to the data collection of traffic accidents in the field and database administration as well as the initial data screening for this study.Disclosure statementNo potential conflict of interest was reported by the author(s).Data availabilityThe datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.Additional informationFundingThis study was supported by the National Key R&D Program of China (2017YFE0118400).
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