Factors affecting fatal PTW at-fault crash outcome metrics at intersections and non-intersections in South Korea

IF 2.4 3区 工程技术 Q3 TRANSPORTATION Journal of Transportation Safety & Security Pub Date : 2022-09-20 DOI:10.1080/19439962.2022.2123582
R. Tamakloe, J. Hong, J. Kim, D. Park
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引用次数: 2

Abstract

Abstract Fatal crashes involving Powered Two-Wheelers (PTWs) are a major health concern in South Korea due to the increase in their usage in the logistics industry. Owing to the way, they are operated on the roadways, most riders end up in fatal crashes. Interestingly, little research exists regarding the impact of risk factors on fatal crashes involving at-fault PTW riders. This study employs a copula-based regression technique to simultaneously model the relationship between crash-risk factors and crash outcome metrics of fatal PTW rider-at-fault crashes, namely the number of crash casualties (casualty size) and the number of vehicles involved in a crash (crash size) at intersections and non-intersection segments. The proposed method was superior compared to the SEM-based bivariate regression approach, and the estimation results showed that there exists a positive relationship between both outcome variables. From the analysis, it was identified that while "other violations" comprising speeding and wrongful overtaking had varying effects on crash size outcomes at the intersection and non-intersection segments, variables such as daytime, winter, head-on collisions, and pedestrian involvement had positive impact on the crash consequence metrics irrespective of the crash location. Insights drawn from the study are used in recommending appropriate countermeasures for improving PTW safety.
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影响韩国十字路口和非十字路口致命PTW故障碰撞结果指标的因素
由于电动两轮车(PTWs)在物流行业的使用增加,致命事故在韩国是一个主要的健康问题。由于这种方式,它们是在公路上运行的,大多数乘客最终都发生了致命的车祸。有趣的是,关于危险因素对涉及有过错的PTW车手的致命事故的影响的研究很少。本研究采用了一种基于copula的回归技术,同时对致命的PTW乘客过失碰撞的碰撞风险因素与碰撞结果指标之间的关系进行建模,即在十字路口和非十字路口路段的碰撞伤亡人数(伤亡规模)和碰撞车辆数量(碰撞规模)。该方法优于基于sem的二元回归方法,估计结果表明,两个结果变量之间存在正相关关系。从分析中,我们发现,尽管超速和非法超车等“其他违规行为”对十字路口和非十字路口路段的碰撞规模结果有不同的影响,但诸如白天、冬季、正面碰撞和行人参与等变量对碰撞后果指标有积极影响,而与碰撞位置无关。从研究中得出的见解被用于建议适当的对策,以提高PTW的安全性。
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来源期刊
CiteScore
6.00
自引率
15.40%
发文量
38
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