Automated verification and validation of signaling systems in PTC and CBTC environments

The digitalized railway signaling systems of today are becoming increasingly complex with more and more functionality added to make better use of the existing infrastructure, while maintaining the highest level of safety. This also means that the task of assessing the safety and function of these systems becomes more and more complex and often constitutes a significant part of the overall development costs.

In this paper, we look at a solution for automating a significant part of these verification and validation tasks, and at how it's been applied to signaling systems in PTC and CBTC environments.