Method of traffic optimization of urban passenger transport at transfer nodes

Volodymyr Vdovychenko,Oleksandr Driuk,Ganna Samchuk

doi:10.15587/1729-4061.2017.103333

Abstract

The method of optimization of traffic of urban passenger transport (UPT) at transportation hubs (TH) is proposed, which implies modeling of operation of a stop point, taking into account individual characteristics of traffic parameters and time of servicing the vehicles. Software implementation of the simulation model is created in the PyCharm environment. The algorithm of the program includes a procedure for the formation of all possible combinations of shifting of time of departure of vehicles from the starting stop point within the traffic interval on the UPT routes, which pass through TH. For every combination, calculation of waiting time and of the number of vehicles in a queue is performed. Employing the minimal values of these indicators, we choose a combination that provides optimal coordination of traffic at TH for each number of service places at a stop point. Efficiency of the algorithm in the lookup and assessment of all possible combinations of values of input factors, implied by the presented method of optimization, may be guaranteed if the following limitations are satisfied: the number of routes is up to 5, traffic interval is up to 30 min. Based on results of the studies, it was established that it is possible to decrease unproductive downtime by up to 50 % even for a single service place if a change is made in the traffic schedule for the purpose of synchronization. In addition, when adding one service place, we observed a nonlinear decrease in the waiting time of vehicles in a queue

Highlights

The importance of urban passenger transport (UPT) is increasing every year, which is predetermined by necessity of provision of sustainable city mobility
In the process of construction of stop points, their structural parameters are determined based on existing Road construction standards [1], and the number of places for simultaneous service is selected taking into account the traffic frequency
The implementation of stages of which will allow identifying the optimum variant of coordination of UPT traffic at transportation hubs (TH) by the criterion of minimization of waiting time for vehicles in line at each value of the number of service places at a stop point

Summary

Introduction

The importance of urban passenger transport (UPT) is increasing every year, which is predetermined by necessity of provision of sustainable city mobility. In the process of construction of stop points, their structural parameters are determined based on existing Road construction standards [1], and the number of places for simultaneous service is selected taking into account the traffic frequency. The basic technical mechanism of a decrease in the specified indicator is an increase in number of places for simultaneous service at a stop point. It is an extensive and not always effective way. The relevant problem is to substantiate parameters of stop points taking into account stochastic sub-processes, and to develop technological mechanisms for the coordination of traffic schedules on UPT routes. Harmonization of vehicle flow at TH and determining the sequence of their service is a promising field of research

Literature review and problem statement

The aim and objectives of the study

Findings

Conclusions