Yeah, LZB internally is based on fixed blocks - but on a system with block lengths down to 50 meters (as in the Stammstrecke München [1]), the difference is neg

Yeah, LZB internally is based on fixed blocks - but on a system with block lengths down to 50 meters (as in the Stammstrecke München [1]), the difference is negligible. Crazy to see that SelTrac was actually developed in Berlin, failed there, but is still in widespread use across the world. [1] https://de.wikipedia.org/wiki/Stammstrecke_(S-Bahn_M%C3%BCnchen) https://de.wikipedia.org/wiki/Stammstrecke_(S-Bahn_M%C3%BCnc...