Method for Estimating Speed of the Out-of-Control Tractor-Semitrailer on Downhill Grades

被引：2

作者：

Yan, Menghua ^{[1
]}

Xu, Jinliang ^{[1
]}

Han, Shuo ^{[1
]}

Dong, Yaping ^{[1
]}

Wei, Leyu ^{[1
]}

机构：

[1] Changan Univ, Sch Highway, Xian, Peoples R China

来源：

TRANSPORTATION RESEARCH RECORD | 2021年 / 2675卷 / 07期

关键词：

ACCIDENT RATES; TRUCK;

D O I：

10.1177/03611981211024230

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Speed estimation for the out-of-control truck on a downhill grade is essential for passive safety features like truck escape ramps to promote traffic safety. This paper presents a method for estimating the speed of out-of-control trucks based on Newton's Laws of Motion. First of all, we analyze gravity effort, aerodynamics, and rolling resistance through a free body diagram of an out-of-control truck on a downhill grade. Further, we select the speed as the dependent variable, with the following road and vehicle characteristics as independent variables: road surface type, grade, grade length, truck size, truck weight, and tire type. Finally, we estimate the speed and acceleration according to Newton's Laws of Motion. The results show that the factors that significantly affect the out-of-control truck's speed include tire type, road surface coefficient, grade, and grade length. TruckMaker simulation results demonstrate that the model is valid at a 99% confidence level.

引用

页码：392 / 403

页数：12

共 42 条

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