Study on Pre-Warning Method of the Lateral Security of Heavy Vehicle in Deteriorative Weather

Zhi-Guo Zhao*, 1, 2, Min Chen1, Nan Chen1, Yong-Bing Zhao2, Xin Chen2
1 School of Mechanical Engineering, Southeast University, Nanjing, China
2 School of Transportation Engineering, Huaiyin Institute of Technology, Huaian, China

© 2014 Zhao et al

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: ( This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the School of mechanical engineering, Southeast University, Nanjing, China; Tel: 0517-83559165; Fax: 0517-83559167; E-mails:,


The lateral security of heavy vehicle in deteriorative weather is one of the main causes of accidents of vehicles on roads. Road safety has become a subject of great concern to institutions of higher education and scientific research institutions. There are important theoretical and practical significances to explore applicable and effective lateral safety warning methods of heavy vehicles. One of the purposes of this paper is to provide a good theoretical basis for the core technology of heavy vehicle safety features for our country's independent research and development. Aiming at the issue of lateral security of heavy vehicle for road conditions in deteriorative weather, this paper constructs the framework of the lateral security pre-warning system of heavy vehicles based on cooperative vehicle infrastructure. Moreover, it establishes vehicle lateral security statics model through analysis of the force of the car in the slope with section bending and states the parameters of vehicles for no rollover. The side slip is indexed to calculate critical speed of vehicles in a bend. This paper also analyzes the influence of road friction coefficient, the road gradient and the turning radius on the lateral security of the vehicle with critical speed on the asphalt pavement with surface conditions ranging from wet, dry, snowing or icy. The calculation results show that the bad weather road conditions, road friction coefficient and turning radius have obvious influence on the lateral security critical speed. Experimental results indicate that the critical speed error warning is within 4% and it meets the design requirements.

Keywords: Cooperative vehicle infrastructure, Deteriorative weather, Heavy vehicle, Rollover, Side slip, The lateral security..