scholarly journals Design and Simulation of a Decentralized Railway Traffic Control System

2016 ◽  
Vol 6 (2) ◽  
pp. 945-951 ◽  
Author(s):  
T. Kara ◽  
M. Cengiz Savas
Keyword(s):  
Control System ◽  
Control Systems ◽  
Traffic Control ◽  
Traffic Management ◽  
General Structure ◽  
Railway Transportation ◽  
Railway Line ◽  
Railway Traffic ◽  
Traffic Control System ◽  
Traffic Management System

With the increasing use of railway transportation, various methods have been developed for the control and management of train traffic. Train traffic control systems that are currently in use are overwhelmingly centralized systems. In this study, the development of the general structure of railway traffic control techniques is examined, centralized and decentralized control systems are investigated, and an alternative train traffic control system, the Decentralized Train Traffic Management System (DTMS), is suggested. Simulation results on the possible application of the proposed method to a railway line in South-East Turkey are employed to evaluate the performance of the developed system.

Digital design of a railway traffic control system: purpose and scope of digitization

2020 ◽  
Vol 131 ◽  
pp. 7-16
Author(s):  
Paweł Wontorski
Keyword(s):  
Control System ◽  
Control Systems ◽  
Traffic Control ◽  
Information Exchange ◽  
Digital Design ◽  
Design System ◽  
Concept Design ◽  
Railway Traffic ◽  
Railway System ◽  
Traffic Control System

The article presents the issue of digitization of the design of railway traffic control systems. Digital design is a key element of digital modeling of railway infrastructure and the future in terms of documenting railway traffic control systems at all stages of its life cycle: concept, design, installation, testing and operation. The digital project is one of the pillars of the concept of the digital twin of the railway system. The need to digitize design results from technological and organizational changes taking place in the railway system. The goal of these changes is to replace traditional methods and techniques for creating a design with modern methods such as BIM. In this sense, the project cannot be further identified with the documentation, but it is a much broader concept that includes a set of data describing the railway traffic control system. The project includes both the mapping of the system - the model, as well as a description of how to implement this model. In order to achieve the main goal of digitization, this process should be carried out in many ways, so that it simultaneously covers the following aspects: (1) design (model), i.e. the subject of design, (2) design system, (3) design process, (4) system environment design system, (5) information exchange between the design system and the environment. The concept of digitization presented in the article requires the full involvement of design offices, infrastructure managers, scientific and research units and due to the extent of the issue it will be a long-term process, but due to the anticipated benefits - inevitable.

scholarly journals Functional analysis of railway traffic control system using an expert system

2018 ◽  
Vol 19 (6) ◽  
pp. 627-631
Author(s):  
Waldemar Nowakowski ◽  
Piotr Bojarczyk ◽  
Zbigniew Łukasik
Keyword(s):  
Control System ◽  
Expert System ◽  
Control Systems ◽  
Traffic Control ◽  
Critical Systems ◽  
Safety Requirements ◽  
Railway Traffic ◽  
Traffic Control System ◽  
Specific Safety ◽  
Requirements Development

The major functionality of railway traffic control system is to ensure efficient and safe railway traffic. Contemporary technique, electronics and informatics in particular, allows for automation of more and more tasks in transportation processes. Irrespective of the manufacturing technology, railway traffic control systems have to meet specific safety requirements. Because of this, these systems belong to group of safety-critical systems, also called safety-related systems. Due to these requirements, development, building and verification processes of railway traffic control systems always end with the assessment of correctness of each process. It should be pointed out that these processes are compound and require high skills level for persons involved in it. Because of this, an environment for an expert system (ExSys Corvid) can be used to automation of these processes. Authors used ExSys Corvid environment to build the expert system for verification and validation of Level Crossing Protection System (LCPS). Research conducted by authors confirmed high usefulness of this technology and showed the need for the usage of it in other railway traffic control systems.

scholarly journals Issues of Railway Traffic Control Devices Availability in the Exploitation Process

2020 ◽  
Vol 50 (4) ◽  
pp. 181-203
Author(s):  
Paweł Drózd ◽  
Adam Rosiński
Keyword(s):  
Control System ◽  
Traffic Control ◽  
Traffic Management ◽  
Review Of The Literature ◽  
Factors Affecting ◽  
Railway Traffic ◽  
Traffic Control System ◽  
Determination Methods ◽  
Control Devices ◽  
Traffic Control Devices

AbstractThis article focuses exclusively on the issues of railway traffic control devices availability in traffic management. One of the factors affecting this availability are tests conducted during maintenance or repair works. A review of the literature in the field of test determination methods was conducted. Next, the railway traffic control system was described and the elements influencing availability were defined. Assumptions and an algorithm of the procedure were presented and the method of determining the tests was proposed.

Development of a Reliable Railway Traffic Control System

2009 ◽  
Vol 42 (1) ◽  
pp. 172-177
Author(s):  
Krzysztof Grochowski ◽  
Sławomir Jasiński ◽  
Mariusz Maciejewski ◽  
Ireneusz Sitek
Keyword(s):  
Control System ◽  
Traffic Control ◽  
Railway Traffic ◽  
Traffic Control System

Simulation study of tram priorities effectiveness implemented in traffic control system

2018 ◽  
Vol 122 ◽  
pp. 5-15
Author(s):  
Mirosław Czerliński ◽  
Rafał Ruść ◽  
Józef Suda
Keyword(s):  
Control System ◽  
Control Systems ◽  
Simulation Study ◽  
Future Study ◽  
Traffic Control ◽  
Detection System ◽  
Control Strategies ◽  
Simulation Approach ◽  
Simulation Environment ◽  
Traffic Control System

One of the elements of implemented in Poland traffic control systems is module of priorities for public transport. Essence of working priority and the basic indicators of its effectiveness were presented. Among methods for testing the effectiveness of the priority, there has been distinguished economic and simulation approach. An example of priority research based on simulation of chosen street in Bydgoszcz was shown, using Vissim simulation environment. Developed simulation model, its connection to the control system, adopted detection system and 4 tested control strategies were also described. Then, the simulation and its results were presented. In results discussion they were compared in terms of adopted control strategies. In summary, possibility of a future study extension was also indicated.

The Application of Polling System in Intelligent Transportation System

2014 ◽  
Vol 644-650 ◽  
pp. 823-827
Author(s):  
Chao Li ◽  
Hong Wei Ding ◽  
Qian Lin Liu ◽  
Xu Lu
Keyword(s):  
Control System ◽  
Traffic Control ◽  
Traffic Management ◽  
Intelligent Transportation System ◽  
Arrival Rate ◽  
Rate Theory ◽  
Polling System ◽  
Human Society ◽  
Traffic Control System ◽  
Simulation Results

With the advancement of society, transport plays an increasingly important role in human society, but more and more traffic problems are constantly plagued mankind. Aiming at the problems facing the traffic and improve the traffic situation, the polling system is applied to intelligent traffic control system in this paper. Based on the type of paper feed of the arrival rate theory, the vehicle arrives at different rates, the wait time is different. Arrival rate is high, the longer the waiting time. Then we simulate system and get the simulation results, and compare the theoretical and simulation results. Finally, the theory to practical systems is using in microprocessor hardware simulation, and actual results further validate the correctness. Through the intelligent traffic control system, a good solution to traffic jam phenomenon is got and traffic management plays an important role.

scholarly journals Types of operating data in Rail Traffic Control Systems

2018 ◽  
Vol 19 (12) ◽  
pp. 693-696
Author(s):  
Bartłomiej Ulatowski ◽  
Zbigniew Łukasik ◽  
Alfred Kurkowski
Keyword(s):  
Control System ◽  
Control Systems ◽  
Traffic Control ◽  
Operating Data ◽  
Railway Systems ◽  
Railway Industry ◽  
Traffic Control System ◽  
Real Challenge ◽  
Operational Data ◽  
Rail Traffic

This article discusses the issues of operating data in national and European Rail Traffic Control systems, i.e. in the ERTMS / ETCS and SRK systems. The article presents the possibilities and limitations of ERTMS systems. General principles of system implementation are also given, as well as specific functional levels of the Rail Traffic Control System are presented. The article describes and presents operational data related directly to the railway systems, which are based on the standard described in document E-1758. The article draws attention to the complexity of Rail Traffic Control processes, as well as the fact that it is necessary to modernize solutions that in the coming years will be a real challenge for the railway industry..

scholarly journals Selected Issues of Safe Operation of the Railway Traffic Control System in the Event of Exposition to Damage Caused by Lightning Discharges

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5808
Author(s):  
Renata Markowska ◽  
Zofia Wróbel
Keyword(s):  
Control System ◽  
Power Systems ◽  
Traffic Control ◽  
Lightning Discharge ◽  
Lightning Protection ◽  
Current Standard ◽  
Protection Measures ◽  
Railway Traffic ◽  
Protective Devices ◽  
Traffic Control System

Lightning discharge becomes a serious source of interference and damage for electronic and electrical power systems. Safe and reliable operation of railway traffic control systems requires proper protection against the effects of lightning. However, the current standards on lightning protection, PN-EN/EN/IEC 62305, do not cover railway objects. Moreover, there are no other standards or recommendations dedicated to the railway. The paper is an attempt to apply the procedure of lightning risk management according to PN-EN 62305-2 to select the proper protection measures in railway objects. A case study for the signal box with installed relaying and digital stations of the railway traffic control system is analyzed. The analysis comprises calculations based on the current standard PN-EN 62305-2:2012 but including the issues specific to railway traffic control. The risks of lightning losses have been calculated for two cases: without lightning protection measures and with protection measures proposed to decrease the risks below the tolerable values. The results show that a practically effective solution to reduce the risks is applying surge protective devices with proper characteristics. Another way is replacing unshielded incoming lines with shielded ones of given shield bonding way, and supplementing it with surge protective devices when necessary.

scholarly journals Smart Accident Detection and Switching of Traffic Signal

2019 ◽  
Vol 9 (2) ◽  
pp. 1142-1145
Keyword(s):  
Traffic Control ◽  
Traffic Management ◽  
Traffic Signals ◽  
Traffic Signal ◽  
Rf Receiver ◽  
Mems Sensor ◽  
Traffic Control System ◽  
Traffic Management System ◽  
Smart Traffic ◽  
Accident Detection

An accident is one of the major causes of unnatural and untimely death. This is one of the serious issues throughout the world. Most of the accidents occur due to vehicle factors, improper traffic management, and lack of timely help. With the increase in the number of vehicles, it may be little hard to keep away from such accidents on road. The main objective is to implement the new advancements in saving human lives by detecting the occurrence of the accident in a vehicle and by directing the ambulance to the accident location without time delay. Also by implementing smart traffic control system, the ambulance moves to medical centre in an effective way without any stall in the traffic signals. Automation of accident detection is implemented by sensor-based ambulance management with the smart traffic management system. It consists of Crash sensor and MEMS sensor for detecting the accident in the vehicle and RF transmitter on the ambulance to communicate with the RF Receiver located on the traffic signal. This helps the ambulance to cross the junction switching the signals from Red to Green when the signal is received by the ambulance.

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