An analysis of barriers in train traffic using risk influencing factors

摘要

A method to evaluate/rank the effectiveness of various risk reducing measures, based on barriers and factors influencing these barriers are presented. As an example a specific railway scenario is investigated, considering the barriers to prevent a train from leaving a station when there already is another train on the anterior block section. The various barriers are first investigated by a fault tree analysis. The basic events are ranked according to their importance. By linking risk influencing factors, RIFs, (rather stable conditions related to the equipment and personnel of the operating railway company) to the basic events risk influencing models are established. By linking these RIFs to the basic events, it is possible to give a more in depth overall analysis of the relevant safety measurers and their effect. The analysis provides a ranking of the most critical RIFs, and thus offers decision support regarding the prioritising of risk reducing measures.