Mathematical model for studying the braking distance of a car equipped with ABS in winter conditions

Abstract

The article aims to develop a mathematical model for analytical studies of the braking process of a car equipped with an anti-lock braking system in order to identify the relationship between the stopping and braking distances of a car and pedestrian visibility in dark winter conditions, when headlights are contaminated with anti-icing materials. The mathematical model of the braking process of a car equipped with ABS was analyzed. Experimental studies of the braking process of a car with running and disabled ABSs were carried out on winter roads. The experimental studies of headlight contamination with chemical anti-icing materials (CAIM) and changes in luminous intensity were carried out in real road conditions in winter. The results are presented in the article. The results of the experimental studies of pedestrian visibility in dark conditions with contaminated headlights are presented. The adequacy of the mathematical model of the braking distance of a car with running and disabled ABSs in winter conditions was assessed. The trends characterizing the effect of headlight contamination on the pedestrian visibility in dark winter conditions are described. The results of the study are presented in tables, diagrams and equations. The values of the stopping distance were determined at different initial braking speed rates. The visibility distance for a car with contaminated headlights was determined in dark winter conditions.

A New Stopping Sight Distance Model and Fuzzy Reliability Analysis Comparison

“…Since a reasonable stopping sight distance can effectively reduce the occurrence of highway emergencies [2], many scholars have carried out research on the influencing factors of stopping sight distance, which are mainly divided into three aspects: vehicle, road and driver. Vehicle start from the academic performance to the braking system of the vehicle, and a new stopping sight distance model is proposed [3][4][5]. The road aspect mainly involves the design of the stopping sight distance, and the stopping sight distance design is divided into two-dimensional plane design [6][7][8] and threedimensional design [9][10].…”