Development of Hazard-specific Truck Crash Modification Factors for Cold-region Rural Highways

IF 1.1 4区工程技术 Q3 ENGINEERING, CIVIL

Canadian Journal of Civil Engineering Pub Date : 2024-06-07 DOI:10.1139/cjce-2023-0436

R. G. Yasanthi, Babak Mehran, Phani Kumar Patnala, J. Regehr, Chaouki Regoui

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引用次数: 0

Abstract

This study attempts to develop (i) truck safety performance functions (SPFs), and (ii) hazard-specific crash modification factors (CMFs), for cold-region rural highways. Police-reported truck-involved crashes on rural highway segments of Alberta, Canada, were used to develop truck SPFs for four crash severity levels: total, fatal, personal injury (PI), and property damage only (PDO). Three settings of the Poisson-Tweedie Regression modelling approach representing Poisson, geometric Poisson, negative binomial distributions were used to develop truck SPFs; the negative binomial distribution was deemed as the most appropriate distribution to model truck-involved crashes for all crash severity levels. The CMF for poor visibility (CMF=1.5) suggests that poor visibility increases PI type truck-involved crashes on rural two-lane two-way highway segments by 50% as compared to the number of such crashes attributed to crash causes other than transportation hazards. Road safety researchers may adopt the methodology to effectively rank hazard risks to highway freight transportation systems.

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为寒冷地区农村公路开发针对特定危险的卡车碰撞修正系数

本研究试图为寒冷地区的农村公路开发 (i) 卡车安全性能函数 (SPF) 和 (ii) 特定于危险的碰撞修正系数 (CMF)。在加拿大阿尔伯塔省的农村公路上，警方报告的卡车碰撞事故被用于开发四种碰撞严重程度的卡车 SPF：总碰撞、致命碰撞、人身伤害 (PI) 碰撞和仅财产损失 (PDO)。泊松-特威迪回归建模方法的三种设置分别代表泊松分布、几何泊松分布和负二项分布，用于制定卡车 SPF；负二项分布被认为是对所有碰撞严重程度级别的卡车碰撞建模最合适的分布。能见度低的 CMF（CMF=1.5）表明，与交通危险以外的碰撞原因造成的碰撞数量相比，能见度低会使农村双向双车道高速公路路段上卡车肇事的 PI 类型碰撞增加 50%。道路安全研究人员可采用该方法对公路货运系统的危险风险进行有效排序。

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

Canadian Journal of Civil Engineering 工程技术-工程：土木

CiteScore

3.00

自引率

7.10%

发文量

105

审稿时长

14 months

期刊介绍： The Canadian Journal of Civil Engineering is the official journal of the Canadian Society for Civil Engineering. It contains articles on environmental engineering, hydrotechnical engineering, structural engineering, construction engineering, engineering mechanics, engineering materials, and history of civil engineering. Contributors include recognized researchers and practitioners in industry, government, and academia. New developments in engineering design and construction are also featured.