Effects of road geometric parameters on safety: A case study of Mugling-Narayanghat road in Nepal

IF 1.1 Q1 MATHEMATICS

JOURNAL OF INTERDISCIPLINARY MATHEMATICS Pub Date : 2023-01-01 DOI:10.47974/jim-1677

O. Giri, P. B. Shahi, Janani Selvam, Sandeep Poddar, A. Bhaumik

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Abstract

Road safety has emerged as a global priority due to the multifaceted consequences of road traffic accidents (RTAs) in modern society. The study is focused on the development of an accident prediction model (APM) and identifying the influence of geometric factors on road safety. The study section of the highway was divided into 190 identical segments based on geometric characteristics. Eight models have been developed for establishing the relationship between crash numbers and respective parameters. The significance of the models has been validated by the Akaike Information Criterion (AIC) and Bayesian Information Criterion (BIC). The study unveils that the shoulder and lane width, numbers, and radius of the horizontal curve significantly influence RTAs. However, the gradient and shoulder type have less impact on road accident frequency. The research recommendations for the improvement of safety are increasing the radius of the curves, lane, and shoulder width. Similarly, the study suggests the reduction of the number of horizontal curves for the reduction of crash frequency.

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道路几何参数对安全的影响——以尼泊尔Mugling-Narayanghat公路为例

由于道路交通事故在现代社会造成多方面的后果，道路安全已成为全球优先事项。研究的重点是建立事故预测模型(APM)，并确定几何因素对道路安全的影响。根据高速公路的几何特征，将研究路段划分为190个相同的路段。已经开发了8个模型来建立碰撞次数和各自参数之间的关系。通过赤池信息准则(AIC)和贝叶斯信息准则(BIC)验证了模型的有效性。研究表明，肩道宽度、车道宽度、水平曲线的数量和半径对rta有显著影响。坡度和肩型对道路事故发生频率的影响较小。研究建议增加弯道半径、车道半径和肩宽，以提高行车安全性。同样，研究表明减少水平曲线的数量可以减少碰撞频率。

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

JOURNAL OF INTERDISCIPLINARY MATHEMATICS MATHEMATICS-

CiteScore

2.70

自引率

23.50%

发文量

141

期刊介绍： The Journal of Interdisciplinary Mathematics (JIM) is a world leading journal publishing high quality, rigorously peer-reviewed original research in mathematical applications to different disciplines, and to the methodological and theoretical role of mathematics in underpinning all scientific disciplines. The scope is intentionally broad, but papers must make a novel contribution to the fields covered in order to be considered for publication. Topics include, but are not limited, to the following: • Interface of Mathematics with other Disciplines • Theoretical Role of Mathematics • Methodological Role of Mathematics • Interface of Statistics with other Disciplines • Cognitive Sciences • Applications of Mathematics • Industrial Mathematics • Dynamical Systems • Mathematical Biology • Fuzzy Mathematics The journal considers original research articles, survey articles, and book reviews for publication. Responses to articles and correspondence will also be considered at the Editor-in-Chief’s discretion. Special issue proposals in cutting-edge and timely areas of research in interdisciplinary mathematical research are encouraged – please contact the Editor-in-Chief in the first instance.