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In accordance with the increase in importance of software within railway signaling system, risk costs due to the software error are increasing too. Accordingly, software validation in various aspects is required, and the needs for supporting tool which can automate it are raised. In Korea, the black-box testing tool of railway signaling system taking into consideration of the convenience of use which...
As safety-related regulations for signaling systems are standardized to IEC 61508/62278/62425, and others at the international level, safety activities and its assessment are required to be performed. And also there is need to develop technologies for safety improvement to secure safety signaling systems in terms of technologies for safety activities on each life-cycle. In this paper we have developed...
In accordance with the development of recent computer technology, the dependency of train control system on the computer software is being increased further, and accordingly, the testing for the safety and reliability of train control system software became more important. Hence, the safety assurance of the vital software running on the train control system is very critical task and yet, not many...
Recent advances in computer technology have brought more dependence on software to railway systems. Hence, the safety assurance of the vital software running on the railway system is very critical task and yet, not many works have been done. While much efforts have been reported to improve electronic hardware's safety, not so much systematic approaches to evaluate software's safety. In this paper,...
Personnel maintaining or repairing the railway tracks or signaling equipment around tracks may experience the sensory disorder when they do routine works for many hours and they may not recognize the approaching train, leading to train accidents. In order to prevent such train accidents that may occur because railway track workers are unable to recognize the approaching train, a safety-equipment is...
Recent advances in computer technology have brought more dependence on software to railway systems. Hence, the safety assurance of the vital software running on the railway system is very critical task and yet, not many works have been done. While much efforts have been reported to improve electronic hardware's safety, not so much systematic approaches to evaluate software's safety. In this paper,...
Many critical control systems are developed using formal methods. When software applied to such systems is developed, the employment of formal methods in the software requirements specification and verification will provide increased assurance for such applications. Earlier error of overlooked requirement specification can be detected using formal specification method. Also the testing and full verification...
Safety-critical systems related to the railway communications are currently undergoing changes. Mechanical and electro-mechanical devices are being replaced by programmable electronics that are often controlled remotely via communication networks. Therefore designers and operators now not only have to contend with component failures and user errors, but also with the possibility that malicious entities...
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