What is Feedback of Experience (Rex)

The Rex corresponds to a thorough examination of the circumstances leading to the occurrence of events contrary to security. This is an approach that aims to highlight the shortcomings, dysfunctions and incompatibilities of the safety system and to formulate proposals likely to avoid such situations or reduce their consequences. This is not only to learn lessons to define effective short-term corrective security measures, but also to capitalize and develop knowledge of human and material behaviour in the medium term. Feedback corresponds to a dynamic process of collecting, storing, analyzing and exploiting data relating to situations contrary to safety (accident or incident). This is a causal analytical study of the various factors involved in the genesis of incidents or accidents. Feedback allows for a better understanding of the mechanisms leading to insecurity events. Its aim is to take advantage of the lessons of past experience to improve the level of safety by implementing the appropriate preventive and corrective measures in order to avoid the reproduction of such risky scenarios.

Human Factors Affecting Railway Safety: Approach for Considering Human Errors in Investigations

Habib Hadj-Mabrouk (University Gustave Eiffel, France)