Development of models for assessing a driver's failure­free operation in a transportation system under conditions of traffic congestion

Nizami Gyulyev,Sergij Psol,Sergij Ostashevskiy,Vitalii Voronko,Igor Bugayov,Denys Ponkratov

doi:10.15587/1729-4061.2020.194449

Abstract

This paper has considered the task on determining a driver’s failure-free operation in the transportation system of a city taking into account traffic jams. A driver's time of stay in traffic jams leads to an increase in his/her psycho-emotional condition, an increase in the level of fatigue, and, therefore, to a decrease in failure-free operation. The level of a driver’s failure-free operation directly affects road safety. The driver’s failure-free operation within the elements of a transport system determines the probability of a traffic accident, which depends not only on the network parameters and traffic flows but, first of all, on the response time of the driver.We have developed models for assessing a driver’s failure-free operation along the sections of a transport network and transport nodal points taking into account traffic jams. They have made it possible to assess the probability of a traffic accident for the average driver. The models take into consideration the impact of a traffic jam by changing the response time of a driver, which is a function of changing the level of fatigue.To determine by how many times the probability of a traffic accident for the average driver along the sections of a transport network and in traffic nodes with a traffic jam exceeds the same probability along the same elements of the transport system without traffic jams, we considered the ratio of the probabilities.The adequacy of the models has been verified by comparing the ratio of the probabilities of a traffic accident with the traffic jam along the sections of a transport network and without it to the corresponding ratio of the number of traffic accidents along the same sections of a transport network and at intersections.The developed models that take into account traffic jams for assessing a driver’s failure-free operation along the elements of a transport network make it possible to compare and evaluate various project solutions to improve road safety

Highlights

The efficiency and failure-free operation of a driver in a transport system depend greatly on specific working conditions under which a driver operates
We found that the probability of road accidents on a section of a network after a traffic jam can increase from 5 to 40 % depending on the value of the initial level of fatigue of a driver at the start of a traffic jam and its duration
We improved the existing model and determined the probability of a traffic accident for an individual traffic participant on sections of a transport network taking into account a traffic jam

Summary

Introduction

The efficiency and failure-free operation of a driver in a transport system depend greatly on specific working conditions under which a driver operates. The parameters of a transportation process, which exist in specific situations, determine these conditions. One such situation is a traffic jam, which arises due to the excess of traffic intensity over the capacity of streets and roads. A traffic jam has a negative impact on the psychophysiology of a driver. Safety and reliability of operation of “a driver – a car – a road – an environment” depends on the uninterrupted and high-quality operation of all its components and elements. It follows that it is necessary to investigate how traffic jams affect a functional state and reliability of a driver

Literature review and problem statement

The aim and objectives of the study

Assessment of the adequacy of the developed models

Findings

Conclusions