scholarly journals Track gauge monitoring scope optimization on small urban railway systems

2021 ◽  
Author(s):  
Igor Majstorović ◽  
Maja Ahac ◽  
Stjepan Lakušić
Keyword(s):  
Cross Sections ◽  
Public Transport ◽  
Urban Traffic ◽  
Urban Transport ◽  
Transport Systems ◽  
Gauge Parameter ◽  
Traffic Demand ◽  
Track Geometry ◽  
Railway Systems ◽  
Sampling Distance

Urban transport plays a key role in the sustainable development of large cities. Urban railway systems, as eco-friendly mass transport systems, are becoming the basis of urban traffic development. Maintaining a high-quality service with continuously increasing traffic demand places an additional burden on public transport operators. Track geometry control has a major impact on availability and maintenance costs of public transport. Good management of rail infrastructure involves continuous monitoring of track geometry (track gauge, cant, twist, horizontal and vertical irregularities) where surveying should be done up to several times a year. Measuring of track geometry in chosen track cross-sections can be done automatically with relatively expensive equipment, or manually which is cheaper but takes longer. Therefore, the question arose as to whether it is possible on small urban railway networks to reduce monitoring scope by increasing of sampling distance, and if so, what should be recommended sampling distance. This paper presents, on the example of the City of Osijek tramway system, how changes in sampling distance effects on track gauge parameter. The results of the conducted analyses are presented and discussed. The recommendations on track gauge monitoring scope optimization on small urban networks are made.

Cascading failure with preferential redistribution on bus–subway coupled network

2021 ◽  
pp. 2150103
Author(s):  
Sonnam Jo ◽  
Liang Gao ◽  
Feng Liu ◽  
Menghui Li ◽  
Zhesi Shen ◽  
...  
Keyword(s):  
Public Transport ◽  
Failure Process ◽  
Vital Role ◽  
Urban Transport ◽  
Traffic Load ◽  
Transport Systems ◽  
Cascading Failure ◽  
Passenger Flow ◽  
Urban Public Transport ◽  
Overall Performance

Robustness studies on integrated urban public transport networks have attracted growing attention in recent years due to the significant influence on the overall performance of urban transport system. In this paper, topological properties and robustness of a bus–subway coupled network in Beijing, composed of both bus and subway networks as well as their interactions, are analyzed. Three new models depicting cascading failure processes on the coupled network are proposed based on an existing binary influence modeling approach. Simulation results show that the proposed models are more accurate than the existing method in reflecting actual passenger flow redistribution in the cascading failure process. Moreover, the traffic load influence between nodes also plays a vital role in the robustness of the network. The proposed models and derived results can be utilized to improve the robustness of integrated urban public transport systems in traffic planning.

New Intelligent Transport Systems Applications in Europe to Improve Bus Services

2002 ◽  
Vol 1791 (1) ◽  
pp. 85-91 ◽  
Author(s):  
Nick Hounsell ◽  
Graham Wall
Keyword(s):  
Public Transport ◽  
Traffic Control ◽  
Urban Traffic ◽  
Transport Systems ◽  
Intelligent Transport Systems ◽  
Bus Priority ◽  
Intelligent Transport ◽  
Message Signs ◽  
Investment Process ◽  
Bus Services

Applications of information technology are expanding rapidly across all modes of transport, under the general heading of intelligent transport systems (ITS). For bus-based public transport, a cluster of applications has been developed that can help improve the efficiency and performance of buses on the street, thus helping to provide a real transport alternative to the private car. An initial summary of a range of such ITS examples in Europe is provided, including automatic vehicle location (AVL), bus priority in traffic control systems, automatic ticketing systems, automatic camera enforcement systems, and variable message signs. Then the focus shifts to one area where activity is most pronounced—the implementation of AVL systems and their integration with urban traffic control (UTC) systems. A review of typical AVL/UTC systems operational in Europe is then presented through the identification of some eight alternative architectures and associated system characteristics, such as the technologies used and the location of bus priority “intelligence.” This is followed by a summary of examples from cities in Europe that have implemented these architectures, together with typical results illustrating the effectiveness of these systems. The diversity of architectures, technologies, and systems is recognized as beneficial in providing customer choice, but can generate a significant difficulty for decision makers in local authorities wishing to invest in public transport ITS technologies. A concluding discussion lists some of the key issues involved in this investment process.

scholarly journals The Effects of the Selective Enlargement of Fare-Free Public Transport

2020 ◽  
Vol 12 (16) ◽  
pp. 6390 ◽  
Author(s):  
Krzysztof Grzelec ◽  
Aleksander Jagiełło
Keyword(s):  
Public Transport ◽  
Market Research ◽  
Urban Transport ◽  
Transport Systems ◽  
Local Authorities ◽  
The Public ◽  
Transport Services ◽  
Mode Of Transportation ◽  
Free Transport ◽  
Using Data

In recent years fare-free public transport (FFPT) found itself at the centre of attention of various groups, such as economists, transport engineers and local authorities, as well as those responsible for the organisation of urban transport. The FFPT is hoped to be the answer to contemporary transport-related problems within cities, problems which largely result from insensible proportions between trips carried out via personal mode of transportation and those completed by the means of public transport. This article reviews the motives and effects connected with the introduction to date of fare-free transport zones across the globe. It also presents, using data obtained in market research, the actual impact of a selective extension of the entitlement to free fares on the demand for urban transport services. The effects observed in other urban transport systems were then compared against those observed in relation to one, examined system. Analyses of observed FFPT implementation effects were then used to establish good and bad practices in the introduction of FFPT. The article also contains forecasts on the effect of the extension of entitlement to free fares and an increase in the public transport offer may have on the volume of demand for such services. The analyses have shown that an increase in the public transport offer (understood as an increase in the volume of vehicle-kilometres) would increase the demand for urban transport services more than the selective implementation of FFPT (assuming that the costs incurred by the local authorities remain unchanged).

scholarly journals Sustainability Analysis of Competition in Public Transport Systems: A Comparative Case Study in Hungary and Finland

2020 ◽  
Author(s):  
András Lakatos ◽  
Péter Mándoki
Keyword(s):  
Public Transport ◽  
Current Problem ◽  
Transport Systems ◽  
Comparative Case Study ◽  
Passenger Transport ◽  
Railway Systems ◽  
Time Of Travel ◽  
A Current

Ongoing competition between bus and railway systems in European (especially in the middle, south and east part) regional passenger transport is a current problem. Long term sustainability and efficiency in passenger transport requires a balanced transport policy. These subsectors need to be complement each other, not compete. The parallel bus and railway links can result in a competition. This research explores solutions to this issue for long term environmental and economic sustainability optimization. Some of the important factors include the number of inhabitants to be served, public transport availability, and efficiency in time of travel for vehicles and passengers. To ensure long term sustainability of the presented methodology, the effect of interventions was analyzed. The study compares Finland and Hungary in terms of the competition regional railway and bus links.

Path Reconstruction of Intelligent Traffic Based on Positive Feedback System

2014 ◽  
Vol 513-517 ◽  
pp. 3160-3164
Author(s):  
Xue Li Zhang
Keyword(s):  
Traffic Flow ◽  
Traffic Congestion ◽  
Intelligent Systems ◽  
Supply And Demand ◽  
Demand Management ◽  
Reference Value ◽  
Feedback System ◽  
Urban Traffic ◽  
Urban Transport ◽  
Traffic Demand

Traffic congestion are prevalent in worldwide cities. The imbalance between demand and supply of urban traffic is the root cause of this problem. So taking effective measures to regulate traffic demand, and guiding the traffic problems of the supply and demand balance is the best way to solve traffic congestion. This paper improves the TDM measure, and combines with intelligent information platform for the design of a new urban transport demand management adaptability of dynamic traffic data analysis platform. The platform supported by the technology of wireless sensor communications, intelligent terminals, the Internet and cloud computing is facing with the dynamic needs of traffic flow and traffic congestion state to carry out the operations of spatiotemporal data mining, clustering, and track detection, and to apply it into the traffic hot spots, abnormal driving track, traffic congestion trends and traffic flow detection and analysis, which has a good reference value for the improvement of management and service level of traffic intelligent systems.

Traffic management in cities

2019 ◽  
Author(s):  
Елена Андреева ◽  
Elena Andreeva ◽  
Кристиан Бёттгер ◽  
Kristian Bettger ◽  
Екатерина Белкова ◽  
...  
Keyword(s):  
Traffic Management ◽  
Engineering Students ◽  
Urban Traffic ◽  
Urban Transport ◽  
Population Increase ◽  
Transport Systems ◽  
Traffic Flows ◽  
Organization And Management ◽  
Wide Range ◽  
Traffic Management System

The monograph is devoted to the consideration of issues relevant to the vast majority of cities-the organization and management of traffic flows to improve the mobility of the population, increase the speed and reduce the cost of transportation of passengers and goods, reduce the burden on the environment, etc. The book provides an overview of existing models, methods and tools for modeling and managing traffic flows in cities. The author identifies the main modern challenges to sustainable development of urban transport systems, which should be taken into account in the development of urban traffic management system. The authors substantiate the need for a systematic approach in the development of traffic management systems in cities and propose a practical tool for its implementation — an integrated digital platform for urban traffic management. Describes the experience of creation and application of an integrated automated control system of traffic management TransInfo and its improved version RITM, for the city of Moscow. In conclusion, the forecast of further development of research and development in the field of modeling and management of transport mobility is given. The book is of interest to a wide range of readers involved in the modeling and management of traffic flows, experts in the field of transport planning, scientists, engineers, economists and mathematicians, as well as graduate students and engineering students.

scholarly journals Environmental Effects of Electromobility in a Sustainable Urban Public Transport

2020 ◽  
Vol 12 (3) ◽  
pp. 1052 ◽  
Author(s):  
Krystian Pietrzak ◽  
Oliwia Pietrzak
Keyword(s):  
Air Pollution ◽  
Public Transport ◽  
Fossil Fuels ◽  
Negative Influence ◽  
Air Pollutant ◽  
Urban Transport ◽  
Pollutant Emissions ◽  
Transport Systems ◽  
Mathematical Methods ◽  
Obvious Effect

This article has taken up an issue concerning the influence of the implementation of electromobility assumptions on reduction of air pollution in cities in terms of sustainable urban transport systems. The essential nature of the subject is confirmed by the following figures: transport is responsible for almost 25% of greenhouse gas emissions in Europe and is the main cause of air pollution in cities, almost 90% of city dwellers in the EU are exposed to levels of air pollutants deemed harmful by the WHO, and approximately 95% of vehicles on European roads still use fossil fuels. Therefore, the implemented transport policy, both in the international and domestic aspect of particular countries, is facing the need to significantly reduce the negative influence of transport on people and the environment. Electromobility has become one of the concepts that makes it possible to achieve this goal. Its main objective is to reduce emissions of harmful substances into the environment by deploying electric vehicles (EVs). Research conducted by the authors showed that public transport, apart from the obvious effect of decreased number of private vehicles and decreased congestion, can contribute to reduced air pollutant emissions and become a significant driver for the implementation of electromobility in cities. However, the achievement of this goal depends on taking appropriate actions not only in the transport branch but also in other sectors of economy. The following research methods were applied in the article: literature analysis, documentary method, case study, and mathematical methods. The research area was the city of Szczecin, Poland.

The Role of Active Transport Modes in Enhancing the Mobility of Low-Income People in Latin America and the Caribbean

2021 ◽  
Author(s):  
María Eugenia Rivas ◽  
Tomás Serebrisky
Keyword(s):  
Latin America ◽  
Active Transport ◽  
Low Income ◽  
Public Transport ◽  
Urban Transport ◽  
Transport Systems ◽  
Income Groups ◽  
Low Income Groups ◽  
The Caribbean ◽  
Transport Modes

Active transport modes play a key role in developing sustainable transport systems by making cities accessible, safe, inclusive, and green. In Latin America and the Caribbean, walking and cycling represent a large share of total trips, especially for low-income groups. But for them, the decision to travel by using active transport modes, especially walking, is not based on sustainability but affordability. Income disparities in the region are also reflected in pedestrian and cycling infrastructure, with poor neighborhoods lacking infrastructure of sufficient quality or size. Despite some successful experiences in the region, there is a lack of integration between transport modes, particularly public transport and cycling, which is crucial for improving the accessibility of low-income people, who usually live in peripheral areas, face long commutes, and require connecting infrastructure and services. The region has the opportunity to improve low-income groups access to livelihood opportunities and key services by developing infrastructure supporting nonmotorized transport, increasing citizen participation in planning, improving planning and regulation, and integrating active transport modes in urban transport systems, especially public transport.

Integration of Public Transport and Bus Rapid Transit System

2012 ◽  
Vol 253-255 ◽  
pp. 1860-1863
Author(s):  
Dou Wei Wang ◽  
Xiao Ning Zhu ◽  
Hong Yang Wu
Keyword(s):  
Transport System ◽  
Public Transport ◽  
Life Quality ◽  
Urban Traffic ◽  
Transit System ◽  
Traffic Demand ◽  
The Public ◽  
Public Transport System ◽  
Urban Public Transport ◽  
Industrialization Process

Along with the acceleration of city-urbanization and industrialization process of the cities, city traffic demand increases rapidly. This provides a good development opportunity for the urban traffic and also brings new challenges for the urban traffic at the same time. In addition, the demands for the public transport service quality are becoming more and more strictly for the growth of residents’ travel and the improvement of life quality, the problems in the public transport system have become the main aspects that restrict the development of the urban public transport system. So the advantages of BRT in the optimization of the network are becoming more and more significant.

scholarly journals Performance analysis of Gilingan’s underpass development

2018 ◽  
Vol 195 ◽  
pp. 04011
Author(s):  
Setiono ◽  
Budi Yulianto
Keyword(s):  
Performance Analysis ◽  
Public Transport ◽  
Urban Transport ◽  
Transport Systems ◽  
Accident Rate ◽  
Traffic Performance ◽  
The Government ◽  
Motorized Vehicles

The annual increasing use of motorized vehicles requires improvements in infrastructure to support the reliability of urban transport systems in Surakarta City. The Government of Surakarta City has attempted to improve the infrastructure of the Gilingan Viaduct by creating an underpass. The traffic performance of the model developed is analysed using Indonesian Capacity Manual 1997 (IHCM 1997). The result shows that the development of the Gilingan Underpass has a potential to improve the performance of Jenderal Ahmad Yani road and the performance of the Balapan and Cengklik Intersections. The change of public transport routes of goods (freight) and people to Jenderal Ahmad Yani road has an opportunity to reduce acute congestion at the Joglo Intersection and decrease the accident rate in Monginsidi road.

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