> And what is a “skilled” worker? Experts in digital train infrastructure, for example. The digital infrastructure for train systems is crucial. Companies lik

> And what is a “skilled” worker? Experts in digital train infrastructure, for example. The digital infrastructure for train systems is crucial. Companies like Siemens provide equipment. These are complex projects to convert old infrastructure (signalling & control) to modern digital systems. There are literally thousands of complex projects necessary to upgrade the old train system. This also necessary for local public transport. For example my local train connection to the city has recently been upgraded with digital systems capable to support autonomous train operation. This was one of the first in Germany. Still the trains are not driving autonomously. Much more effort is needed to provide higher throughput for passenger transport.