Influence of speed bumps on braking distance

International Conference on Innovative Research - ICIR EUROINVENT 2019

Maftei, A.^1 ; Dontu, A.I.^1 ; Gaiginschi, L.^1 ; Agape, I.^1

Gheorghe Asachi Technical University of Iasi, Faculty of Mechanical Engineering, Blvd. Mangeron, No. 61-63, Iasi

700050, Romania^1

关键词: Braking distance;    Low adhesion;    Normal forces;    Public roads;    Speed humps;    Theoretical study;    Traffic safety;    Vehicle speed;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/572/1/012098/pdf
DOI  :  10.1088/1757-899X/572/1/012098

来源: IOP

【 摘 要 】

This paper aims to dismiss the popular belief that speed bumps reduce the vehicle speeds or reduce the braking distance. In recent years, the implementation of speed bumps on public roads in Romania has increased. The correct understanding of the role of the speed bump has been misunderstood by the Romanian authorities who use them to slow down traffic on highly used roads. More advanced countries in the segment of traffic controlling and traffic safety have special rules for speed humps and speed bumps. This paper is concerned with the theoretical and experimental study of the performance of the vehicle in emergency braking when passing over such a speed bump. The theoretical study is done by using mathematic formulas and the experimental study is done by using a real car and testing it's braking distance in normal weather on a dry road that has a speed bump implemented. The study shows the influence of the induced forces from the speed bump in the car dynamics, once because of the low adhesion surface of a worn out speed bump and secondly because of the changes in normal force on the wheel after passing over the hump, the influence of the suspension loading is also backed up by the Tr. Ori study.