Holistic safety performance forecasting for train detection system

Axle counter application risk models have been developed aiming to support derivation of safety cases for individual axle counter installation projects. In accordance with the UK safety case regime, each project will have to prove that the technological and procedural solution accepted for the project is the as low as reasonably practicable (ALARP) solution. To achieve this, each individual project will have to demonstrate that a number of different options have been considered and that the most suitable solution has been selected. In addition to this, the project will have to prove that the safety risks introduced to the railway system by introduction of new technology are acceptably low. This paper will focus on a model supporting analysis of the reset processes, the failures during reset model. The aim of this paper is to: (i) depict the development of axle counter application models; (ii) describe the process followed during the development of the models and; (iii) outline the process for future use of models.