scholarly journals The Influence of Transport Link Density on Conductivity If Junctions and/or Links Are Blocked

Mathematics ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 1278
Author(s):  
Anton Aleshkin
Keyword(s):  
Percolation Threshold ◽  
Road Network ◽  
Random Network ◽  
Road Transport ◽  
Transport Network ◽  
Network Density ◽  
Network Algorithms ◽  
The Road ◽  
Link Density ◽  
Percolation Thresholds

This paper examines some approaches to modeling and managing traffic flows in modern megapolises and proposes using the methods and approaches of the percolation theory. The author sets the task of determining the properties of the transport network (percolation threshold) when designing such networks, based on the calculation of network parameters (average number of connections per crossroads, road network density). Particular attention is paid to the planarity and nonplanarity of the road transport network. Algorithms for building a planar random network (for modeling purposes) and calculating the percolation thresholds in the resulting network model are proposed. The article analyzes the resulting percolation thresholds for road networks with different relationship densities per crossroad and analyzes the effect of network density on the percolation threshold for these structures. This dependence is specified mathematically, which allows predicting the qualitative characteristics of road network structures (percolation thresholds) in their design. The conclusion shows how the change in the planar characteristics of the road network (with adding interchanges to it) can improve its quality characteristics, i.e., its overall capacity.

scholarly journals Planning Structure As A Road Traffic Pollution Differentiation Factor: A Case Study Of Nur-Sultan

2021 ◽  
Vol 14 (3) ◽  
pp. 6-13
Author(s):  
A. Zh. Abilov ◽  
M. A. Anzorova ◽  
V. R. Bityukova ◽  
A. G. Makhrova ◽  
A. A. Khojikov ◽  
...  
Keyword(s):  
Road Network ◽  
Road Traffic ◽  
Spatial Differentiation ◽  
Road Transport ◽  
Middle Part ◽  
Transport Infrastructure ◽  
Network Density ◽  
The Road ◽  
High Level ◽  
The City

The article deals with the problem of spatial differentiation of road transport pollution due to the planning structure changes in the new capital of Kazakhstan. The purpose of the work is to study territorial differences in from vehicles Nur-Sultan from vehicles and to identify the role of embodied planning measures among the main factors of its differentiation. The research methodology included the analysis of 1) the city functions and planning structure transformation as well as the buildings and road network density and concentration; 2) traffic speed and intensity, emissions and their distribution areas for each street.The analysis showed that since 1997, when Nur-Sultan received the capital status, it has grown 3 times in the area, 3.5 times in population, and 6 times in the level of motorization. However, the volume of traffic emissions in the city increased only 2 times, largely due to the development of the planning structure and configuration of the road network. The development of a second center in the new part of the city along with the decrease in the barrier function of the river and transport transit because of the faster construction of transport infrastructure led to an increase in the density of the road network by more than 2 times while reducing the density of emissions in the city center by 2.25 times. For the rest of the territory, despite different growth rates in the road network density, the density of emissions steadily decreases from the center to the periphery. However, several locations with a high level of pollution are still present in the middle part, while on the outskirts of the city there are blocks of estate-type houses with low-quality roads, which hinder the development of public transport.

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

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.

scholarly journals THE REVIEW OF THE MONOGRAPH “TRANSPORT: TECHNOLOGIES, ECONOMY, ENVIRONMENT, HEALTH”

Transport ◽  
2003 ◽  
Vol 18 (6) ◽  
pp. la-ld
Author(s):  
Habil Algirdas Jurkauskas
Keyword(s):  
Road Network ◽  
Transport Network ◽  
Information Storage ◽  
Small Scale ◽  
Long Distance ◽  
The Road ◽  
Long Distance Transport ◽  
Monitoring And Forecasting ◽  
Passenger Flows ◽  
Distance Transport

From the first sight the improvement of transport technologies seems to be simple replacement of old transport means/vehicles by new ones. However, even if the most advanced transport means are purchased, they may be used absolutely inefficiently. Therefore, besides transport means it is necessary to improve the entire technological process of transportation. For this purpose many kinds of research have to be carried out, such as: the identification of freight and passenger flows, their constant monitoring and forecasting, the optimisation of the road network and transport flows in it, the optimisation of freight origin and distribution places, etc. Abroad there are many publications concerning the optimisation of long distance transport network and transportation of goods weighing 20–40 tons. However, actually there is no research of such cases when the weight of freight is 50–1500 kg and the transport network is in a small scale region, let us say in a town, under the conditions of congestion of the road network and ecological restrictions. It was attempted to propose certain solutions in this field: 1) the methodology of statistical analysis of freight flows and forecasting was proposed; 2) the problem of information storage is usually encountered in using statistical information on freight flows, for this purpose relevant algorithms for the solution of this problem are proposed.

scholarly journals Geometric Design of Highways for Accommodation of More Traffic Volume with Increased Design Speed

2018 ◽  
Vol 7 (3.12) ◽  
pp. 137
Author(s):  
S Srikiran ◽  
S Deepak Kumar ◽  
C Venkatasubramanian ◽  
D Muthu ◽  
S Suriyanarayanan
Keyword(s):  
Road Network ◽  
Critical Factor ◽  
Smooth Curve ◽  
Road Transport ◽  
Traffic Volume ◽  
Geometric Design ◽  
Highway Projects ◽  
The Road ◽  
The Government ◽  
Design Speed

Road transport plays an important role in India’s economy. It enables the country’s transportation sector to contribute 6.1% towards India’s GDP. The road network in our country is considered as a critical factor to the country’s development, social integration and security needs of the country. The Government of India has promoted foreign investments in highway projects to bring out high standards and quality. India’s road network carries over 65% of freight and 85% passenger traffic. The traffic volume carried by the national highways almost exceeds the designed traffic volume, and hence the desired speed cannot be achieved. Thus, widening of highways becomes necessary. The population growth is also to be considered and hence provision for future widening is to be provided. Our paper deal with the geometric design for widening of NH-9 is carried out using MX-Bentley software as per IRC specifications. This design includes horizontal and vertical profiling throughout the stretch of the road, according to the existing topographic data. The radius of the curve has been increased to make a smooth curve. Also, the vertical profile has been designed based on the allowable gradient and sight distances. From this, accommodation of more traffic volume and increment of design speed seems to be possible.

GIS-Analysis of Central Asian Transportation Systems’ Configuration

2019 ◽  
Vol 950 (8) ◽  
pp. 45-51
Author(s):  
P.M. Sapanov
Keyword(s):  
Spatial Data ◽  
Road Network ◽  
Road Transport ◽  
Transportation Systems ◽  
Transport Infrastructure ◽  
Gis Analysis ◽  
Road Transportation ◽  
The Road ◽  
Central Asian ◽  
High Degree

The author describes the performed GIS-analysis of the Central Asian transportation systems. The road transportation infrastructure of the whole region and its individual countries (Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan and Uzbekistan) has been studied. The overview of the factors, influencing the formation of regional transportation systems, including historical, political and natural, has been done. The road network of Central Asian countries has been modeled using GIS network analysis toolset, with spatial data provided by OpenStreetMap. The so-called topological tiers of the network have been identified, showing the uneven provision of the studied area with road transport infrastructure. The proposed research method makes it possible to note a high degree of the road network integration between the countries. The areas with low transport accessibility, as well as autonomous parts of road network have been visualized. The research categorizes the countries’ transport networks configurations types formed under the influence of economic, social, agricultural, climatic and topographical factors.

Romanian Model for Road Sector Restructuring

2003 ◽  
Vol 1848 (1) ◽  
pp. 10-18
Author(s):  
Richard Robinson ◽  
Michael M. Stanciu
Keyword(s):  
European Union ◽  
Eastern Europe ◽  
Road Network ◽  
Central And Eastern Europe ◽  
Institutional Development ◽  
Road Transport ◽  
Communist Regime ◽  
The European Union ◽  
The Road ◽  
Effectiveness And Efficiency

During the last 20 years of the Communist regime in Romania, the road network was allowed to fall into decline. But since 1993 Romania’s plans for accession to the European Union have led to an increased emphasis on effectiveness and efficiency of the road transport system, and plans have been prepared and implemented for restructuring the road sector. Progress in the restructuring is charted in the areas of road sector financing, management, and regulatory and institutional development. Efficiencies have resulted from greater specificity of operations and increased use of competition. There have been remarkably few losses resulting from this process. The approach adopted in Romania provides a simple framework that has potential for application throughout Central and Eastern Europe, and perhaps more widely, for improving the effectiveness and efficiency of road network management arrangements.

scholarly journals Intelligent Transport Systems in the Management of Road Transportation

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Blanka Kalupová ◽  
Ivan Hlavoň
Keyword(s):  
Road Network ◽  
Road Transport ◽  
Transport Systems ◽  
Multimodal Integration ◽  
Road Transportation ◽  
Intelligent Transport Systems ◽  
Intelligent Transport ◽  
The Road ◽  
Accident Frequency ◽  
Traffic Delays

Abstract Extension of European Union causes increase of free transfer of people and goods. At the same time they raised the problems associated with the transport, e.g. congestion and related accidents on roads, air traffic delays and more. To increase the efficiency and safety of transport, the European Commission supports the introduction of intelligent transport systems and services in all transport sectors. Implementation of intelligent transport systems and services in the road transport reduces accident frequency, increases the capacity of existing infrastructure and reduces congestions. Use of toll systems provides resources needed for the construction and operation of a new road network, improves public transport, cycling transport and walking transport, and also their multimodal integration with individual car transport.

Logistical Processes Interaction Model Design in Agglomeration Development

2020 ◽  
Vol 4 (58) ◽  
Author(s):  
Gulnar Sadykova ◽  
Kanat Daubayev ◽  
Aishakhanym Zhameshova
Keyword(s):  
Interaction Model ◽  
Stability Index ◽  
Road Transport ◽  
Urban Agglomeration ◽  
Transport Network ◽  
Survey Method ◽  
Network Efficiency ◽  
The Road ◽  
Time Optimal ◽  
On The Road

Purpose of this study is to develop a logistics processes interaction model within the development of urban agglomeration, taking into account basic functional areas of logistics. Objectives of the study were to define the concept of "agglomeration logistics", to identify the main logistics processes of agglomeration, to calculate the logistics stability index (LSI) for the Almaty urban agglomeration In this paper such research methods as text analysis, logic modeling, survey method of analysis of hierarchies were used. The significance of the study lies in the development of a model explaining the nature of logistics processes interactions in Almaty urban agglomeration. The novelty of the research lies in adaptation and practical application of the methodology for assessing sustainability of urban agglomeration logistics and identifying most influencing factors in order to improve it. The main results of the research are: formulating the concept of "agglomeration logistics", identifying interaction algorithms of the main agglomeration logistics processes and calculating the logistics stability index for Almaty agglomeration. The following conclusions were made: there are problems of inefficient functioning of logistics processes within the agglomeration. Increasing number of road cargo and passengers has revealed the need to increase road transport network efficiency and carrying capacity; as a result of territorial structure, insufficient development of transport communications between the agglomerations ‘districts, loads on the road transport network increased, which led to violations of fundamental logistics` rules such as "just in time", "optimal route", "high delivery speed", which increases the load on logistics processes and hinders its integration; main constraints to the sustainability of logistics in Almaty agglomeration are air pollution and poor road safety.

A state-wise performance appraisal of the Indian roads using PROMETHEE-GIS approach

2018 ◽  
Vol 25 (9) ◽  
pp. 3338-3356 ◽  
Author(s):  
Shankar Chakraborty ◽  
Rajeev Ranjan ◽  
Poulomi Mondal
Keyword(s):  
Performance Appraisal ◽  
Road Network ◽  
Research Work ◽  
Road Transport ◽  
The State ◽  
Transport Infrastructure ◽  
Preference Ranking ◽  
Indian States ◽  
Content Type ◽  
The Road

Purpose A road network provides arterial arrangement to facilitate business, transport, social integration and economic progress of any nation. During the last seven decades after independence, road transport infrastructure in India has expanded manifold, both in terms of spread (total length and density of road) and capacity (number of on-road registered vehicles, and volume of passenger and freight traffic handled). But, with the enrichment of road transport network in India, the number of traffic accidents and total cost for maintaining the road infrastructure also keeps on increasing. It becomes necessary to evaluate state-wise performance of the Indian roads using some mathematical tools. The paper aims to discuss this issue. Design/methodology/approach In this paper, using preference ranking organization method for enrichment of evaluations (PROMETHEE) and geometrical analysis for interactive aid (GAIA) approaches, an attempt is made to appraise the state-wise performance of Indian roads based on 12 critically important criteria. A geographic information system method and a hue-saturation-value color coding scheme are also employed to identify the influence of individual criterion on the overall rank of 29 Indian states. Findings It is observed that amongst all the considered states, the road conditions in the states of Mizoram and Arunachal Pradesh are really satisfactory, whereas Bihar and Uttar Pradesh are the lagging states requiring governmental intervention and support to enhance their road network infrastructure. Practical implications This analysis would help the decision makers to identify the strengths and deficiencies of each Indian state with respect to its road conditions so that proper promotional and growth actions can be implemented. Originality/value From the review of the existing literature, it is quite evident that till date, no research work has been conducted in order to evaluate the performance of roads, and their conditions and characteristic features in the Indian context. In this paper, the state-wise performance of the Indian roads is appraised based on several identified parameters using a combined PROMETHEE-GAIA approach.

scholarly journals Quantification of the noise charges for the selected road network sections

2018 ◽  
Vol 196 ◽  
pp. 04047
Author(s):  
Martina Margorínová ◽  
Marjan Lep ◽  
Mária Trojanová
Keyword(s):  
Air Pollution ◽  
Member State ◽  
Road Network ◽  
Road Traffic ◽  
Road Transport ◽  
European Parliament ◽  
Health Problems ◽  
External Costs ◽  
The Road ◽  
Negative Impacts

Road traffic is the most used kind of transportation which has a lot of benefits. Except of these benefits, the road traffic causes a lot of negative impacts like a congestions, air pollution and noise. The proposal of European Parliament is reduction of these impacts by their inclusion to the road charges. In the annex of amending directive 1999/62ES are stated prices for congestion and external costs. If the member state wants higher amount like are stated, they have to be calculated. One element of external costs is noise costs. Noise from road transport causes health problems and has annoying effect to people. In this article, it was processed proposal of noise charges quantification, which consist of a few steps. This process was applied for quantifying noise charges with real values for Slovakia and Slovenia.

Sign in / Sign up

Export Citation Format

Share Document