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首页> 外文期刊>Traffic Injury Prevention >An evaluation of the real-world safety effect of a lane change driver support system and characteristics of lane change crashes based on insurance claims data
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An evaluation of the real-world safety effect of a lane change driver support system and characteristics of lane change crashes based on insurance claims data

机译：对车道改变驱动器支持系统的真实安全效果的评估以及基于保险权利要求数据的车道改变崩溃的特征

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Objective: Lane changes, which frequently occur when vehicles travel on major roads, may contribute to critical situations that significantly affect the traffic flow and traffic safety. Thus, knowledge of lane change situations is important for infrastructure improvements as well as for driver support systems and automated driving development projects. The objectives of this study were to evaluate the crash avoidance performance of a lane change driver support system, the Blind Spot Information System (BLIS) in Volvo car models, and to describe the characteristics of lane change crashes by analyzing detailed information from insurance claim reports.Methods: An overall evaluation of the safety effect of BLIS was performed by analyzing crash rate differences in lane change situations for cars with and without the optionally mounted BLIS system based on a population of 380,000 insured vehicle years. Further, crashes in which the repair cost of the host vehicle exceeded approximately US$1,250 were selected and compared. Finally, the study examined different precrash factors and crash configurations, using in-depth insurance claims data from representative lane change crash cases including all severity levels in a population of more than 200,000 insured vehicle years.Results: The technology did not significantly reduce the overall number of crashes when all types of lane change crashes and severity levels were considered, though a significant crash-reducing effect of 31% for BLIS cars was found when more severe crashes with a repair cost exceeding US$1,250 were analysed. Cars with the BLIS technology also have a 30% lower claim cost on average for reported lane change crashes, indicating reduced crash severity. When stratifying the data into specific situations, by collecting precrash information in a case-by-case study, the influence of BLIS was indicated to differ for the evaluated situations, although no significant results were found. For example, during general lane change maneuvers (i.e., not while exiting or entering highways or during weaving/merging situations) the crash rate was reduced by 14%, whereas in weaving/merging situations the crash rate increased.Conclusions: The insurance data analyzed provided useful information about real-world lane change crash characteristics by covering collisions in all crash severities and thus revealed information beyond what is available in, for example, data sets of police-reported crashes. This will guide further development of driver support systems. For crashes with repair cost exceeding US$1,250, a significant crash reduction was found, although the technology did not significantly reduce the total number of lane change crashes. An average lower insurance claim cost for cars equipped with the BLIS technology also indicated that the technology contributes to reduced crash severity even if crashes were not totally avoided. Stratifying the data into different lane change crash situations gave indications of the condition-specific performance of the system, even if the results were not statistically significant at the 95% level.
机译：目的：当车辆在主要道路上旅行时，巷道变化可能有助于显着影响交通流量和交通安全的危急情况。因此，对车道改变情况的了解对于基础设施改进以及驾驶员支持系统和自动化驾驶开发项目非常重要。本研究的目标是评估车道改变驱动器支持系统的碰撞性能，沃尔沃汽车模型中的盲点信息系统（BLIS），并通过分析保险索赔报告的详细信息来描述车道变更崩溃的特征。方法：通过基于380,000个被保险车辆的人口分析车道变化情况的车道变化情况的碰撞速率差异，对BLI的安全效果进行了整体评价。此外，选择并比较了主车辆的维修成本约为1,250美元的崩溃并进行比较。最后，研究检查了不同的预防因素和崩溃配置，使用来自代表车道更换碰撞案例的深入保险声明数据，包括超过200,000辆被保险车辆的人口中的所有严重程度。结果：该技术没有显着减少整体当考虑所有类型的车道改变碰撞和严重程度时，崩溃的次数，尽管在分析了超过1,250美元的维修费用更严重的崩溃时，发现了降低了BLIS汽车的显着降低效果。对于报告的车道变化崩溃，具有BLIS技术的汽车的平均也有30％的索赔成本，表明崩溃严重程度降低。当将数据分解为特定情况时，通过在逐案研究中收集预防信息，表示对评估的情况不同的影响对于评估的情况不同，尽管没有发现显着的结果。例如，在通用车道期间，在延长或进入高速公路或在编织/合并情况下，不在退出或进入/合并情况时的过程中，碰撞率降低了14％，而在编织/合并情况下，碰撞率增加。结论：分析保险数据通过覆盖所有碰撞严重性的碰撞，提供了有关现实世界车道更改崩溃特性的有用信息，因此揭示了超出了例如警察报告的崩溃的数据集中可用的信息。这将指导驾驶员支持系统的进一步发展。对于维修费用超过1,250美元的崩溃，发现了显着的碰撞减少，尽管该技术没有显着减少车道变化崩溃的总数。平均较低的保险索赔，适用于BLIS技术的汽车也表明，即使没有完全避免崩溃，该技术也有助于降低碰撞严重程度。将数据分解为不同的车道改变碰撞情况，使得系统的特异性特异性性能的指示，即使结果在95％水平上没有统计学意义。

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