SIGNAL+DRAHT | Issue 04/2023
Safety demonstration, assessment and approval during the automation of existing metro lines
The automation of a metro system leads to technical and operating changes. The safety of these changes must be demonstrated, the safety evidence must be assessed and the changes approved. The interaction between already existing and new technology, as well as the changed operating processes may require a safety upgrade in the existing subsystems. This article explains the challenges and the necessary activities in safety demonstration and assessment, which are specific to the automation of existing metro systems...