SIGNAL+DRAHT | Issue 06/2025
Migration of signalling and traffic management systems using digital twins
This article explores the necessity of migrating aging traffic management and signalling systems to modern, open solutions using commercial off-the-shelf (COTS) hardware. It delves into the challenges of migration, from knowledge gaps and budget constraints to the complexities of transitioning vital railway components without disrupting daily operations. By highlighting a real-world example, focusing on the ongoing Stockholm Metro modernisation, this article demonstrates how a structured migration approach leveraging digital twins and formal verification can ensure a seamless transition...