> how we can improve their resilience so we can stop this from happening in future I'm not so sure about that. Just a few months ago a temporary power cut in

> how we can improve their resilience so we can stop this from happening in future I'm not so sure about that. Just a few months ago a temporary power cut in London left some modern Siemens trains stuck for hours because they had shutdown do to irregular power and had to be manually rebooted. Apparently nobody thought to investigate if the signaling system is also vulnerable to irregular power.