Modeling injury severity in HAZMAT truck-involved crashes: Accounting for heterogeneity in a developing country

IF 3.4 Q3 TRANSPORTATION

IATSS Research Pub Date : 2025-12-01 Epub Date: 2025-12-05 DOI:10.1016/j.iatssr.2025.11.007

Ehsan Jafari Nasab , Abdoreza Sheikholeslami , Jose Manuel Vassallo , Amin Moeinaddini

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引用次数: 0

Abstract

One of the types of crashes that has a high fatality rate is the Hazardous Material (HAZMAT) truck-involved crashes. Investigating the factors affecting the severity of HAZMAT truck-involved crashes can assist authorities in making more accurate evaluations of policies to increase road safety and reduce the injury severity of crashes involving these vehicles. In this study, the main goal is to investigate the factors that affect the severity of HAZMAT truck-involved crashes. Considering the heterogeneity of the injury severity of crashes can provide a more accurate assessment of the factors involved in those crashes. In this regard, by using the data of 482 HAZMAT truck-involved crashes in Iran and also by using a Random Parameter Ordered Logit (RPOL) model, the factors affecting the injury severity of those vehicle crashes and systematic and random heterogeneity have been investigated. According to the results of the model, crashes with multiple vehicles involved have a significant effect on the increasing the severity of HAZMAT truck-involved crashes. Furthermore, the presence of public vehicles in HAZMAT truck-involved crashes, and the driver's risk-taking in driving at high speed based on driving records has a significant effect on the decreasing severity of crashes. In addition, the results showed that there is an interaction effect between the variables of vehicle age and upside-down crashes on increasing the injury severity of the crashes. On the other hand, the results indicate that there is an interaction effect between the variables of front-to-front, front-to-back, and low heavy truck traffic on the road with the variable of the crash caused by HAZMAT truck on increasing the injury severity of the crashes. The results of the study confirm that there is random heterogeneity based on the normal distribution function for the mean of injury severity of HAZMAT truck-involved crashes.

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模拟危险材料卡车涉及碰撞的伤害严重程度：考虑发展中国家的异质性

其中一种具有高死亡率的碰撞类型是危险物质（HAZMAT）卡车涉及的碰撞。调查影响危险物品卡车碰撞严重程度的因素可以帮助当局更准确地评估政策，以提高道路安全并减少涉及这些车辆的碰撞造成的伤害严重程度。在这项研究中，主要目的是调查影响危险材料卡车涉及碰撞严重程度的因素。考虑到碰撞损伤严重程度的异质性，可以更准确地评估这些碰撞所涉及的因素。在这方面，通过使用伊朗482起涉及HAZMAT卡车的事故数据，并采用随机参数有序Logit （RPOL）模型，研究了影响这些车辆碰撞伤害严重程度的因素以及系统和随机异质性。模型结果表明，多车碰撞对危险品卡车碰撞严重程度的增加有显著影响。此外，根据驾驶记录，公共车辆的存在以及驾驶员在高速驾驶中的冒险行为对碰撞严重程度的降低有显著影响。此外，研究结果还表明，车龄和倒立碰撞变量之间存在交互作用，对增加碰撞伤害严重程度有显著影响。另一方面，研究结果表明，道路上前后、前后和低重卡车交通变量与危险品卡车碰撞变量之间存在交互作用，对增加碰撞伤害严重程度有影响。研究结果证实了危险品卡车碰撞伤害严重程度均值的正态分布函数存在随机异质性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IATSS Research TRANSPORTATION-

CiteScore

6.40

自引率

6.20%

发文量

审稿时长

42 weeks

期刊介绍： First published in 1977 as an international journal sponsored by the International Association of Traffic and Safety Sciences, IATSS Research has contributed to the dissemination of interdisciplinary wisdom on ideal mobility, particularly in Asia. IATSS Research is an international refereed journal providing a platform for the exchange of scientific findings on transportation and safety across a wide range of academic fields, with particular emphasis on the links between scientific findings and practice in society and cultural contexts. IATSS Research welcomes submission of original research articles and reviews that satisfy the following conditions: 1.Relevant to transportation and safety, and the multiple impacts of transportation systems on security, human health, and the environment. 2.Contains important policy and practical implications based on scientific evidence in the applicable academic field. In addition to welcoming general submissions, IATSS Research occasionally plans and publishes special feature sections and special issues composed of invited articles addressing specific topics.