Research on the speed thresholds of trucks in a sharp turn based on dynamic rollover risk levels.

Truck rollover is a problem that seriously endangers the safety of human life. Under special conditions, when the driver takes a sharp turn, the truck is most prone to rollover. Speed seriously affects the driving stability of the truck in a sharp turn, but the calculation of the safe speed is not a...

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Autores principales:	Tian Xin, Jinliang Xu, Chao Gao, Zhenhua Sun
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/10f24741eb214a268abfbe5ca705d312
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spelling	oai:doaj.org-article:10f24741eb214a268abfbe5ca705d3122021-12-02T20:17:42ZResearch on the speed thresholds of trucks in a sharp turn based on dynamic rollover risk levels.1932-620310.1371/journal.pone.0256301https://doaj.org/article/10f24741eb214a268abfbe5ca705d3122021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0256301https://doaj.org/toc/1932-6203Truck rollover is a problem that seriously endangers the safety of human life. Under special conditions, when the driver takes a sharp turn, the truck is most prone to rollover. Speed seriously affects the driving stability of the truck in a sharp turn, but the calculation of the safe speed is not accurate enough at present. The aim of this paper is to develop a more accurate safe speed calculation method to avoid the truck rollover in a sharp turn. Firstly, the calculation formula of the rollover threshold was derived based on a theoretical model, then, the simulation tests were carried out. We selected a 4-axle truck with a total weight of 30t as the subject, simulated the dynamic process of the truck rollover in a sharp turn with TruckSim, evaluated the dynamic rollover risk levels of the truck during this process, and verified the accuracy of the simulation results by results of the theoretical model. Finally, by analyzing the steering principle of the vehicle, the safe speed threshold and the limit speed threshold of the truck in a sharp turn were calculated according to the lateral acceleration corresponding to the rollover risk levels. The results show that no matter what the loading condition of the truck is, when the rollover margin is reduced to about 0.15g, the truck just reaches the risk level of critical rollover; the result provides an accurate algorithm for speed thresholds of the truck when turning radius is less than 250 m. The research provides a calculation method for safe speed of trucks from a dynamic perspective. The research results can be applied to the speed warning system of trucks, which can make drivers better control the rollover risk of trucks in the process of driving and improve driving safety.Tian XinJinliang XuChao GaoZhenhua SunPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 8, p e0256301 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Tian Xin Jinliang Xu Chao Gao Zhenhua Sun Research on the speed thresholds of trucks in a sharp turn based on dynamic rollover risk levels.
description	Truck rollover is a problem that seriously endangers the safety of human life. Under special conditions, when the driver takes a sharp turn, the truck is most prone to rollover. Speed seriously affects the driving stability of the truck in a sharp turn, but the calculation of the safe speed is not accurate enough at present. The aim of this paper is to develop a more accurate safe speed calculation method to avoid the truck rollover in a sharp turn. Firstly, the calculation formula of the rollover threshold was derived based on a theoretical model, then, the simulation tests were carried out. We selected a 4-axle truck with a total weight of 30t as the subject, simulated the dynamic process of the truck rollover in a sharp turn with TruckSim, evaluated the dynamic rollover risk levels of the truck during this process, and verified the accuracy of the simulation results by results of the theoretical model. Finally, by analyzing the steering principle of the vehicle, the safe speed threshold and the limit speed threshold of the truck in a sharp turn were calculated according to the lateral acceleration corresponding to the rollover risk levels. The results show that no matter what the loading condition of the truck is, when the rollover margin is reduced to about 0.15g, the truck just reaches the risk level of critical rollover; the result provides an accurate algorithm for speed thresholds of the truck when turning radius is less than 250 m. The research provides a calculation method for safe speed of trucks from a dynamic perspective. The research results can be applied to the speed warning system of trucks, which can make drivers better control the rollover risk of trucks in the process of driving and improve driving safety.
format	article
author	Tian Xin Jinliang Xu Chao Gao Zhenhua Sun
author_facet	Tian Xin Jinliang Xu Chao Gao Zhenhua Sun
author_sort	Tian Xin
title	Research on the speed thresholds of trucks in a sharp turn based on dynamic rollover risk levels.
title_short	Research on the speed thresholds of trucks in a sharp turn based on dynamic rollover risk levels.
title_full	Research on the speed thresholds of trucks in a sharp turn based on dynamic rollover risk levels.
title_fullStr	Research on the speed thresholds of trucks in a sharp turn based on dynamic rollover risk levels.
title_full_unstemmed	Research on the speed thresholds of trucks in a sharp turn based on dynamic rollover risk levels.
title_sort	research on the speed thresholds of trucks in a sharp turn based on dynamic rollover risk levels.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/10f24741eb214a268abfbe5ca705d312
work_keys_str_mv	AT tianxin researchonthespeedthresholdsoftrucksinasharpturnbasedondynamicrolloverrisklevels AT jinliangxu researchonthespeedthresholdsoftrucksinasharpturnbasedondynamicrolloverrisklevels AT chaogao researchonthespeedthresholdsoftrucksinasharpturnbasedondynamicrolloverrisklevels AT zhenhuasun researchonthespeedthresholdsoftrucksinasharpturnbasedondynamicrolloverrisklevels
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Research on the speed thresholds of trucks in a sharp turn based on dynamic rollover risk levels.

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