RAMS management and assessment of railway signaling system through RAM and safety activities

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 be required. There are several international standards for railway signaling system safety activity requirements, required to demonstrate those safety activities. Signaling system safety assessment is performed by analyzing and evaluating system safety activity process and its results. In this paper, we suggest railway signaling system safety activity techniques for railway signaling system safety assessment and its specific execution techniques at each activity phase. We also analyze safety assessment task based on suggested safety activity techniques and identify necessary study case required to ensure safety assessment techniques.