railway transportation
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2022 ◽  
Vol 19 (4) ◽  
pp. 102-109
Author(s):  
M. M. Zheleznov ◽  
O. I. Karasev ◽  
D. A. Rakov ◽  
E. A. Shitov

Reduction in travel time is one of the eloquent trends in transport developments. It is consistent with the desire of leading transport companies to create conditions to increase traffic speeds.The objective of the article is to analyse prospects and drivers for development of high-speed rail transportation as of a priority transport segment characterised by best safety rates and environmental friendliness as compared to other types of transportation.The review of core parameters of HSR is suggested to show features of its global development.Ecological friendliness, encouragement of labour and other mobility of people, of innovative technology development of railways and interconnected industries are most relevant as universal drivers of HSR development.Constraints due to substantial investment needs, long payback period, necessity to implement additional side projects to develop interrelated transport infrastructure to obtain more tangible economic and social effects, to provide for sufficient passenger flow at the initial or further stages of HSR operation were considered as main deterrents.The factors, their parameters, assessment of their priority ranking when making decisions on construction or development of HSR are determined in each country by transport development strategies, current economic conditions, and a set of other factors. 


2022 ◽  
pp. 1039-1054
Author(s):  
Eshan Samanta ◽  
Arif Ahmed Sekh ◽  
Debnarayan Khatua

Nowadays, it is very often that some portion of the Indian traction system is still suffering from a single line railway transportation. This in turn creates a havoc disturbance in maintaining the proper sequence of traction control system. Also, passengers are taking risk to catch the train which is already in motion but no such action has been taken to eliminate these consequences. It has been found that more or less various works have been done on Automation in Railway Crossing Gate using Microcontroller and IR Sensor. Thus, it is often decided to develop an idea for the Indian traction system to ensure better controlling action by introducing Limit Switches as Tactile Sensors and by introducing HMI using PLC. The purpose here to take control over various controlling domains, including Railway crossing gate are as follows: Track signal, crossing level signal, alarm notification, and platform edge fence. The proper sequencing needs to be operated via a 128 I/O module with 2 KB memory size small PLC kit.


2022 ◽  
pp. 391-416
Author(s):  
Diego Galar ◽  
Dammika Seneviratne ◽  
Uday Kumar

Railway systems are complex with respect to technology and operations with the involvement of a wide range of human actors, organizations and technical solutions. For the operations and control of such complexity, a viable solution is to apply intelligent computerized systems, for instance, computerized traffic control systems for coordinating airline transportation, or advanced monitoring and diagnostic systems in vehicles. Moreover, transportation assets cannot compromise the safety of the passengers by only applying operation and maintenance activities. Indeed, safety is a more difficult goal to achieve using traditional maintenance strategies and computerized solutions come into the picture as the only option to deal with complex systems interacting among them and trying to balance the growth in technical complexity together with stable and acceptable dependability indexes. Big data analytics are expected to improve the overall performance of the railways supported by smart systems and Internet-based solutions. Operation and Maintenance will be application areas, where benefits will be visible as a consequence of big data policies due to diagnosis and prognosis capabilities provided to the whole network of processes. This chapter shows the possibilities of applying the big data concept in the railway transportation industry and the positive effects on technology and operations from a systems perspective.


2022 ◽  
pp. 138-152
Author(s):  
Hilarius Bambang Winarko ◽  
I. Putu Setiasa Giri

The purpose of this study is to examine the effect of automation attributes in railway digital ticket payment toward the commuters' satisfaction and retention in railway transportation. Digital payment security is one of the essential qualities which was little discussed in determining public transportation service performance. This study used the partial least square structural equation modeling method study to measure the six effects indicated by the proposed research framework to fill the last research gap. The results showed two automation attributes, reliability and security, significantly influenced commuter satisfaction, supporting the behavioral theory as commuter satisfaction also substantially affected the commuters' retention attitude. This study revealed that the reliability factor was the most significant. The findings communicate important insight for local government in improving its railway transportation's quality of service. The study's scope was to train commuters who live in Jakarta metropolitan area and use the railway as their public or mass transportation.


2021 ◽  
Vol 13 (1) ◽  
pp. 8
Author(s):  
Min Yang ◽  
Tao Wang ◽  
Chunji Guo ◽  
Chris Ellis ◽  
Yuefeng Liao

In this paper, a particular form of flywheel hybrid powertrain, namely, the Integrated Kinetic Energy Recoup Drive (i-KERD) is fully explored and its applications for EVs, HEVs and FCEVs in recent years to show the energy-savings and performance enhancement potential of this innovative powertrain technology. It is shown that the i-KERD is a small highspeed flywheel integrated into an e-CVT, or power-split hybrid drive. Under NEDC or WLTC, typically it can achieve some 40% energy savings and >50% gain in 0–100 kph acceleration due to effective regenerative braking mechanism of the integrated flywheel power system. In addition to its “peak-shaving” capability, the highly-efficient, long-life flywheel power on-board, is able to keep the kinetic energy of the vehicle fully recycled, rather than dissipated during braking. The i-KERD technology has also been applied to urban railway transportation (i.e., underground railway) and off-road heavy construction equipment, where regenerative braking plays a great role on energy efficiency.


2021 ◽  
Vol 80 (6) ◽  
pp. 366-373
Author(s):  
A. B. Kosarev ◽  
O. N. Rimskaya ◽  
I. V. Anokhov ◽  
I. V. Sirotenko

Development of the railway industry depends on the work of many engineers and scientists who master the advanced technical and technological frontiers. The results of their work require experimental verification by specialists, technicians and engineers in the field. At the same time, in a systematic setting of the case, the conduct of experiments should be preceded by discussion and scientific discussion. A scientific and technical journal is intended to serve as an absentee format for such a discussion.In 2022, our magazine will celebrate its 80th anniversary. It was created by the order of the Political Administration of the People's Commissariat of Railways of the USSR in 1942, in the midst of the Great Patriotic War. The state entrusted our journal with a very important mission — concentration and dissemination of experience in the restoration of damaged communication lines and development of new technologies for military freight and passenger railway transportation. This extreme practical orientation and an urgent need for empirical knowledge was reflected in the choice of the original name of the journal — “Railways engineering”.Since the creation of the journal, the editorial staff have striven to fulfll the mission entrusted to it and to maintain a high level of domestic railway science. Several stages can be distinguished in the eighty-year history of the VNIIZHT scientifc journal.This article presents an analysis of the frst stage — the stage of the war years.


Dependability ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 12-19
Author(s):  
Yu. V. Babkov ◽  
E. E. Belova ◽  
M. I. Potapov

The Aim of the article is to develop a motive power failure classification to enable substantiated definition of dependability requirements for motive power as a part of a railway transportation system, as well as for organizing systematic measures to ensure a required level of its dependability over the life cycle. Methods. The terminology of interstate dependability-related standards was analysed and the two classifications used by OJSC “RZD” for estimating the dependability of technical systems and motive power were compared. The dependability of railway transportation systems is studied using structural and logical and logical and probabilistic methods of dependability analysis, while railway lines are examined using the graph theory and the Markov chains. Results. An analysis of the existing failure classifications identified shortcomings that prevent the use of such classifications for studying the structural dependability of such railway transportation systems as motive power. A classification was developed that combines two failure classifications (“category-based” for the transportation process and technical systems and “type-based” for the motive power), but this time with new definitions. The proposed classification of the types of failures involves stricter definitions of the conditions and assumptions required for evaluating the dependability and technical condition of an item, which ensures correlation between the characteristics of motive power and its dependability throughout the life cycle in the context of the above tasks. The two classifications could be used simultaneously while researching structural problems of dependability using logical and probabilistic methods and Markov chains. The developed classification is included in the provisions of the draft interstate standard “Dependability of motive power. Procedure for the definition, calculation methods and supervision of dependability indicators throughout the life cycle” that is being prepared by JSC “VNIKTI” in accordance with the OJSC “RZD” research and development plan. Conclusion. The article’s findings will be useful to experts involved in the evaluation of motive power dependability.


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