MODELLING TRAFFIC FLOWS USING GRAPH THEORY

An intensive increase in road transport, particularly individual, in recent years has led to such consequences as increased time spent on travel, the number of forced stops, traffic accidents, the occurrence of traffic jams on the road network, reducing traffic speed and a deteriorated urban road network in cities. The most effective method for solving these problems is the use of graph theory, the main characteristics of which is reliability, durability and accessibility of a free as well as loaded network. Based on their analysis the methods for network optimization are proposed.

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Measures to optimize traffic and the environment. Calculations of environmental safety on a given section of the Rostov-on-Don road network

Safety of technogenic and natural systems ◽

10.23947/2541-9129-2020-4-68-77 ◽

2020 ◽

pp. 68-77

Author(s):

R. S. Durov ◽

◽

E. V. Varnakova ◽

K. O. Kobzev ◽

◽

...

Keyword(s):

Road Network ◽

Road Transport ◽

Environmental Safety ◽

Environmental Indicators ◽

Nox Emissions ◽

The Road ◽

Before And After ◽

Reduce Emissions ◽

On The Road ◽

State Of The Environment

Introduction. One of the most pressing socio-economic problems is the state of the environment, which affects the living conditions of many people. The article deals with the problem areas of the intersection of 20-ya Liniya street – Sholokhov Avenue in Rostov-on-Don. Problem Statement. The purpose of this paper is to improve environmental safety at the intersection of 20-ya Liniya street – Sholokhov Avenue in Rostov-on-Don by reducing emissions from road transport through the proposed measures to reorganize traffic on this section of the road network. Theoretical Part. The article provides an assessment of environmental and road safety on the road network section before applying the proposed measures. The measures are listed and justified that would help improve the conditions for road transport at the selected intersection and reduce emissions from road transport, which would improve environmental safety. The calculation of environmental indicators was made after the proposed measures to reduce NOx emissions by cars. Conclusion. The article analyzes the environmental indicators before and after the events, and then compares them. Based on the analysis and calculations, it is determined how much the proposed measures to optimize traffic will help reduce NOx emissions by cars.

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TRAFFIC FLOWS MODELING WITH INACCESSIBLE FOR DRIVING ROAD SECTIONS

RSUH/RGGU Bulletin. Series Information Science. Information Security. Mathematics ◽

10.28995/2686-679x-2021-2-19-36 ◽

2021 ◽

pp. 19-36

Author(s):

Anastasiya N. Zhukova ◽

◽

Marina S. Shapovalova ◽

Keyword(s):

Network Formation ◽

Road Transport ◽

Traffic Density ◽

Traffic Flows ◽

The Road ◽

Model Modification ◽

Road Section ◽

Transport Line ◽

On The Road ◽

Python Programming

Computerized traffic modeling makes it possible to find out the modification needs to assess the traffic flow on the roads and detect likely problem areas in order to take timely measures to eliminate them. Competent preparation of a road network formation plan based on the acquired information makes it possible to reduce the load on the road transport line, avoid traffic jams, and also reduce the average time spent by drivers on the roads. The macroscopic and microscopic models of the cars flow were analyzed by authors to implement the computer model. The article considered the model of the cellular automata by Nagel–Schreckenberg, with the author’s addition that takes into account the presence of the road sections inaccessible for driving in. The need to modify the lane change algorithm was implemented: the condition of the need to change the lane when car is meeting an inaccessible road section was added. And also the “polite” drivers algorithm for bypassing inaccessible areas with a high density of the traffic flows was proposed. Such a model is realized on Python programming language. An analysis of vehicles behavior with different traffic density and location of inaccessible road sections for two- and three-lane roads was carried out based on that model modification.

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INFLUENCE OF STOCHASTIC FACTORS ON THE OPERATIONAL MANAGEMENT OF TRANSPORT FLOWS. PART 2

Avtoshliakhovyk Ukrayiny ◽

10.33868/0365-8392-2020-4-264-22-27 ◽

2020 ◽

Vol 264 (4) ◽

pp. 22-27

Author(s):

Galina Burlakova ◽

◽

Dmitry Ganzheev ◽

Keyword(s):

Transport System ◽

Management System ◽

Traffic Accidents ◽

Block Diagram ◽

Road Transport ◽

Traffic Flows ◽

Short Term ◽

Phase Theory ◽

Operational Management ◽

On The Road

The article describes the existing problems of uncertainty in the system of operational redistribution of traffic flows, considers stochastic factors that are different in nature and features of the effect on the transport system, which require consideration in the operational management of traffic flows, as well as the features of their influence on the short-term state of the transport system. A simplified classification of stochastic factors is given, algorithms for the connection of these factors with each other and with indicators that are already taken into account by the management system are given, the nature of the influence is indicated. Statistical data samples are analyzed and the basics of methods for working with them are indicated. For the most common stochastic factors, such as the number of traffic accidents on city road networks and weather and climatic features of the region, methods for generating graphic materials and mathematical approximations are proposed, and formulas for calculating some random variables are recommended, including using limits in the framework of the phase theory of traffic flows. Cartograms with the help of which it is possible to establish stochastic dependences of climatic changes and changes in the ecological state by the example of Mariupol are given. It is proposed for practical use a detailed block diagram of identifying stochastic factors, the formation of information arrays, their analysis and the supply of control signals to the operational management system. The diagram shows a clear differentiation of the primary and secondary stochastic data arrays, and their recommended links to the operational process control system of the transport process are indicated. Using the stated theoretical foundations, it becomes possible to increase the efficiency of the city’s transport system by optimizing the processes of the operational redistribution of traffic flows on the road network and making changes to short-term planning processes. Keywords: stochastic factors, road transport, traffic flow, transport system, transport planning, management, regulation.

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Road Traffic Safety Analysis Of Different Junction Types On The State Roads

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/1202/1/012034 ◽

2021 ◽

Vol 1202 (1) ◽

pp. 012034

Author(s):

Valentina Amare ◽

Juris Smirnovs

Keyword(s):

Traffic Safety ◽

Road Network ◽

Traffic Accidents ◽

Road Traffic ◽

Road Accidents ◽

The Road ◽

Road Traffic Safety ◽

Road Capacity ◽

On The Road ◽

The Impact

Abstract The highest number of road accidents occurs at junctions. One of the aims of traffic organisation is to improve traffic safety in these areas. Based on a variety of indices – road capacity, points of conflict, number, and severity of road traffic accidents – different alternatives for junctions are evaluated. However, the road network has many junctions and roads serve to travel from point "A" to point "B" at a given time. Therefore, one of the most important tasks when addressing the issue of road safety is to find a rational way of improving the safety without losing the importance of the road. The aim of this paper is to analyse the impact of different junctions on the road network and basing on actual data develop a method for the evaluation of different types of junctions with respect to road class.

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Quantitative and incidental analysis of road accidents No. (6) Section (1)

ALUSTATH JOURNAL FOR HUMAN AND SOCIAL SCIENCES ◽

10.36473/ujhss.v221i2.454 ◽

2017 ◽

Vol 221 (2) ◽

pp. 111-124

Author(s):

Dr. Jamal Hamed Rashid Al Dulaimi

Keyword(s):

Economic Activity ◽

Road Network ◽

Traffic Accidents ◽

Research Study ◽

Road Accidents ◽

Geographic Factors ◽

The Road ◽

On The Road ◽

The Impact ◽

The Relationship

Spatial analysis of traffic accidents on the road to Baghdad - Cote d' Represent traffic accidents and the resulting human and material losses with significant implications for the national economy through the resulting from the steadily growing in accidents. The purpose of the preparation of this message, highlighting the importance of the road to Baghdad - Cote in between Baghdad and Khafezh Wasit and cons of accidents and the problems caused by the extent of their capacity to satisfy the need of users in the study area private towing General because this road is a product of the development in the study area , reaching Total length of road ( 172 / km) a reflection of the level of development and economic activity, which reached the region as well as the fact that this road is the basis for the implementation of many projects of economic and development across the two provinces and Iraq also aimed message to determine the extent of the impact of geographic factors positively and negatively on the network, in order to finding the relationship between the road as a phenomenon of geography and the surroundings of the elements of natural and human in its schedule, and the aim of this study was to determine the characteristics and features and follow the development dimensions of the road , and explore patterns in the light of the changes spatial in the territory of the study and evaluation of geography as a reflection of the extent of its development economically and socially in the study area,In order to achieve these goals varied ways curriculum known followed by the researcher , in keeping with the nature of the topics in the course of the search, The study of traffic accidents on the road to Baghdad - Cote d' distribution and causes and effects that appear as a result of such incidents so contained study carries four chapters and ensure each chapter , including a number of detective first chapter three detectives , first , for example , use historical approach when pursuing the origins and evolution of roads and the second part the use of the curriculum fundamentalist , which dealt with geographical factors that have affected the road network , which turned out to be an impact and role in causing the accident and then in Section III of the research study of human factors and their impact on the way the study area and traffic accidents.

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FUNCTIONING OF THE CAR PARKING PLACES NEAR HOUSES: FORMULATION OF THE PROBLEM OF THE ROAD CITY NETWORK

The Russian Automobile and Highway Industry Journal ◽

10.26518/2071-7296-2019-6-670-679 ◽

2019 ◽

Vol 16 (6) ◽

pp. 670-679 ◽

Cited By ~ 2

Author(s):

I. E. Agureev ◽

D. A. Yurchenko

Keyword(s):

Computer Aided Design ◽

Road Network ◽

Transport Model ◽

Urban Traffic ◽

Transport Systems ◽

Traffic Flows ◽

Residential Areas ◽

The Road ◽

Network Loading ◽

On The Road

Introduction. The load models of the road network make it possible to understand a lot of the transport, social, environmental, and other city problems. Creating transport models requires knowledge of the traffic flows’ formation and functioning. The paper formulates a goal and poses tasks for the research conducting of the adjoining territories of residential areas in Tula as one of the urban traffic flows’ sources and of the identifying patterns of the parking places near houses’ influence on the road network loading.Materials and methods. The basis of the research was the development in the field of predictive simulation of automobile transport systems. The authors used complex of computer-aided design “TransNet”, which allowed adjusting the initial data in the base model by the results of the parking places’ functioning.Discussion and conclusions. As a result, the improved transport model of Tula allows making the forecast for determining the main parameters of the transport system taking into account the dynamics of vehicles’ local area departure at different time intervals. Moreover, the proposed methodological tools and algorithm for solving the problem of the road network loading in a quasi-dynamic setting helps to solve existing transport problems and to improve the traffic organization.The authors have read and approved the final manuscript. Financial transparency: the authors have no financial interest in the presented materials or methods. There is no conflict of interest.

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MATHEMATICAL MODELING OF TRAFFIC FLOWS ON THE ROAD NETWORK CITY

Alternative energy sources in the transport-technological complex problems and prospects of rational use of ◽

10.12737/17887 ◽

2016 ◽

Vol 3 (1) ◽

pp. 236-240

Author(s):

Кадасев ◽

D. Kadasev ◽

Коротнев ◽

V. Korotnev

Keyword(s):

Mathematical Modeling ◽

Mathematical Model ◽

Transport Process ◽

Road Network ◽

Practical Method ◽

Traffic Flows ◽

The Road ◽

Time Distance ◽

On The Road ◽

The Mathematical Model

This article describes a practical method of constructing mathematical models of traffic flow, the most suitable for a particular city highway. The initial data are: instant speed, time, distance, flux density, intensity of movement of vehicles. Using the obtained data, built regression model, and conducted correlation analysis. The choice of the mathematical model that most faithfully describes the transport process was made on the basis of the correlation coefficient

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PROTECTIVE FOREST STRIPS ALONG AUTOMOTIVE ROADS

Vestnik of Kazan state agrarin university ◽

10.12737/article_5c3de3817c03d1.22631961 ◽

2018 ◽

Vol 13 (4) ◽

pp. 46-50

Author(s):

Екатерина Кулакова ◽

Ekaterina Kulakova ◽

Алексей Штепа ◽

Aleksey Shtepa ◽

Алексей Чернодубов ◽

...

Keyword(s):

Traffic Accidents ◽

Negative Impact ◽

Practical Importance ◽

Road Transport ◽

Growth Conditions ◽

Economic Transformation ◽

Main Function ◽

Noise And Vibration ◽

The Road ◽

On The Road

Despite the economic transformation in Russia, and the decline in the development of certain industries, the stability of the existence and development of social and economic relations depends on the freight and passenger turnover of the country. Shipping and passengers on public roads tends to increase, which leads to an increase in the proportion of all types of road transport on the road network. Transport, in addition to the positive aspects for the social and economic sphere, also has negative sides, in the form of a large number of traffic accidents, congestion situations and environmental pollution. At the present stage of the study of these negative aspects, ecology plays a special, important role, protecting the environment from the negative impact of transport. There is a need to protect the roadside area, which is able to provide cut-off of emissions of polluted substances into the air and a kind of noise and vibration protection near the road. This problem can be solved by creating protective plantings, since green plantings are the best are the best natural (inartificial) means of protection against air pollution, snow and sand drifts, noise and vibration, they provide architectural and artistic design along the roads. And, in addition to performing their main function - protection, they are of great practical importance along the regional and federal highways, since they have a beneficial effect on the growth conditions of agricultural crops, blocking the way for hot dry winds.

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Use of geo-information systems in the registration of road-traffic accidents on the roads

E3S Web of Conferences ◽

10.1051/e3sconf/202126402021 ◽

2021 ◽

Vol 264 ◽

pp. 02021

Author(s):

Sirojiddin Yadgarov ◽

Qurbon Muminov ◽

Qaxramon Ergashev ◽

Ruzigul Sayfutdinova

Keyword(s):

Road Safety ◽

Road Network ◽

Traffic Accidents ◽

Road Traffic ◽

Level Density ◽

National Policy ◽

Road Transport ◽

Similar Rate ◽

Road Traffic Accidents ◽

The Road

We come up with the use of traditional methods in recording road traffic accidents that occur on highways, which makes the YTH analysis several difficulties and shortcomings. The analysis of YTH s has been shown to be effective in the use of Geoinformation systems. In conclusion, it can be noted that international experience shows that in recent years in European countries with well-developed motorization with high GDP and the level density of the road network, a national policy, and programs in the field of road safety in the medium and long term, in addition to the General problems and methods of their solutions, identifies targets, characterizing the level of road safety. This must include experience in implementing similar programs in other countries with a similar rate of car ownership, income level of the population, the condition, and development of the road network. The level of development of the road network, which is characterized by compliance with the total length, density, distribution of roads by functional value and categories, socio-economic needs of society in road transport, plays a significant role in the formation of accidents.

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