A DEDUCTION STRATEGY FOR RAILWAY SIGNALLING SYSTEM REQUIREMENTS

초록

Railway signalling system is required to be high safety against collision, derailment and collision at level crossing and to be high availability. The signaling system is usually consisted of automatic train control, interlocking and centralized traffic control systems and each system must be high fail safe and available. This study tried to disassemble each systems into functions, to which safety levels and reliabilities are allocated and in which a methodology and process shows for the requirements deduction of railway signaling system.