Systems safety-a real example (European rail traffic management system, ERTMS)

This paper describes a collaborative project involving 7 companies and Railtrack to develop a complete cause-consequence model for a proposed European High Speed Railway. The results were compared with accident and incident data from Eurostar, the UK East Coast Mainline, Hannover-Wurzburg, Paris-Lyon and Roma-Firenze. The calculated individual risks were compared with the safety targets for the on-board and trackside ERTMS constituents in order to establish tolerability for the core hazards and the key functions. The paper discusses the approach, process and outcome of the study to December 2000.