Statistical analysis of variables affecting tire - pavement friction
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International Journal of Pavement Research and Technology Journal homepage: www.springer.com/42947
Statistical analysis of variables affecting tire - pavement friction Mohsen Najafi Alamdarlo, Saeid Hesami* Faculty of Engineering, , Babol Noshirvani University of Technology, Shariati Street, Babol, Mazandaran, Iran Received 19 May 2020; received in revised form 21 August 2020; accepted 28 August 2020
Abstract
Tire – Pavement friction is one of the most important indicators in the transport safety field and also affects the design, construction, and maintenance of pavement and tire at all stages. Different parameters, independently or in combination with other cases, affect the Tire – Pavement friction. In this research, the effect of Four important factors (velocity, pavement texture, tread depth, and surface water flow) on Tire – Pavement friction, by using a locked wheel machine has been investigated. Also, the effect of changes in each of these variables on the friction amount simultaneously w hit concerning the change of other variables has been studied. The results generally indicate the friction between the tires and a specific pavement could be reduced by up to 70% due to the changes in the different variables. Also, by using statistical analysis, the relationship between the variables that can affect tire- pavement friction, was presented as an equation with an appropriate level of significance. Keywords: Friction; Tire; Pavement; Locked wheel
1. Introduction Tire – Pavement friction is one of the important principles in designing infrastructure and transport safety. In many used equations in road designing, friction plays a key and direct role. For example, in the airport designing, horizontal curve, Stopping Sight Distance, and emergency lines, the friction rate plays a significant role. Furthermore, the amount of friction between the tire and pavement also has a significant impact on the number and severity of car crashes. In recent years driving accidents have become a major reason of casualties in the worldwide, while only 54% of vehicle traffic is in the developing countries, but more than 90% of the death toll from traffic accidents have occurred in these countries [1]. Also, in developed countries, traffic accidents are one of the main reasons for casualties. Certainly, the negative consequences of driving accidents are not limited to human deaths, and the economic and social costs of a car accident always have been a major challenge for human societies and will be [2].The occurrence of a traffic accident can be due to human error, environmental conditions, vehicle or passageway defects, or a combination of these factors [3]. Pavement condition is among the most important factors affecting the occurrence and severity of traffic accidents [4]. Friction between the tire and pavement can
* Corresponding author E-mail address: [email protected] (S. Hesami). Peer review under responsibility of Chinese Society of Pavement Engineering.
be considered as one of the important characteristics of the pav
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