Gabauer Douglas J, Gabler Hampton C
Department of Civil and Environmental Engineering - Bucknell University, Lewisburg, PA, USA.
Ann Adv Automot Med. 2009 Oct;53:131-40.
In the roadside safety community, there has been debate over the influence of vehicle and barrier type on rollover rates in traffic barrier crashes. This study investigated rollover rates between sport utility vehicles (SUVs), pickup trucks, and cars in vehicle-traffic barrier crashes and has examined the effect of barrier type on rollover risk for concrete barrier and metal barrier impacts. The analysis included 955 barrier impact cases that were selected from 11-years of in-depth crash data available through the National Automotive Sampling System (NASS) / Crashworthiness Data System (CDS). In real world tow-away level longitudinal barrier collisions, the most important predictors of vehicle rollover were found to be vehicle type and whether the vehicle was tracking prior to barrier impact. Based on binary logistic regression, SUVs were found to have 8 times the risk of rollover as cars in barrier impacts. Although pickups were found to have an increased risk of rollover compared to cars, the risk was not as pronounced as that found for SUVs. This finding has direct implications for the full scale crash testing of longitudinal barriers as the testing procedures have been predicated on the assumption that the pickup truck provides a critical or worst case impact scenario. In towaway crashes, our study does not support the notion that concrete barriers have a higher risk of vehicle rollover than metal beam barriers.
在道路安全领域，关于车辆和护栏类型对车辆与交通护栏碰撞事故中翻车率的影响一直存在争议。本研究调查了运动型多用途车（SUV）、皮卡和轿车在车辆与交通护栏碰撞事故中的翻车率，并研究了护栏类型对混凝土护栏和金属护栏碰撞时翻车风险的影响。分析纳入了955起护栏碰撞案例，这些案例选自通过国家汽车抽样系统（NASS）/碰撞安全性数据系统（CDS）获得的11年深度碰撞数据。在实际的可拖走级别的纵向护栏碰撞中，发现车辆翻车的最重要预测因素是车辆类型以及车辆在碰撞护栏之前是否处于追踪状态。基于二元逻辑回归分析，发现SUV在护栏碰撞中的翻车风险是轿车的8倍。虽然与轿车相比，皮卡的翻车风险有所增加，但不如SUV那么明显。这一发现对纵向护栏的全面碰撞测试具有直接影响，因为测试程序一直基于皮卡提供关键或最坏情况碰撞场景这一假设。在可拖走碰撞事故中，我们的研究并不支持混凝土护栏比金属梁式护栏导致车辆翻车风险更高这一观点。
