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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...
As existing electrical and mechanical railway signaling systems are replaced with the system using computer technologies, system capability has improved in such a way that the system is intellectualized. Railway signaling system is a vital system which is directly connected to massive life damage or economical loss due to its features. Therefore strict safety activity and assessment methodology must...
Railway signaling systems is a vital control system which is responsible for preventing the train collision from functions such as speed control and route control between trains. As the recent advances of electronic and telecommunication technologies, the existing signaling system has been replaced with new electronic ones. When it comes to the configuration by micro-processors, the interface link...
Failures of equipments for train control systems are linked directly to extensive damages of human lives or financial losses from the increasing uses of train control equipments utilizing computers. Then safety activities for assuring safety and reliability are needed during the system life-cycle. Risk assessment is important phase to increase safety from determining the risk presented by the identified...
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