Author(s)

C.J. Gibson & D.A. Johnston

Abstract

Communications-based signaling systems are seen as the solution to problems such as higher safety requirements, increased passenger throughput, cost effectiveness and operational flexibility. However, customers are concerned about the overall life cycle costs for solving these problems. Solid state electronic equipment in high-density mass transit applications must be proven to have high reliability and high availability to reduce the probability of failures effecting large portions of the system. There must be multiple sources of supply for critical subsystems, so as not to cause demand penalty pricing. Integrated communications-based automatic train control and vehicle propulsion control require un

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