>>920077Look up Stadtbahn B carriages. They were built so that in tunnel stations and segregated sections they could operate on high platforms where customers could just step in and in normal mixed traffic environment steps would slide out for boarding from low platform. As of now, many systems are waist deep in piss how to comply with accessibility requirement with this kind of mixed use system. Personally I think invas should just stay home.
There are places like Leipzig, Dresden and Mannheim region that didn't bother with stadbahn transition or U-bahns at all and sport ginormous tram networks.
Places like Rhein-Neckar region that got barely started with gauge and platform transition and now there are buch of disconnected Stadtbahn lines around the tram network.
Places like Nürmberg and Munchen that have both U-bahn and sizeable tram network alike like.
Places like Bielefield that built just 100% kosher tram tunnels under the city center and never touched the legs of the system.
Places like Köln and Dortmund that got amost all the way but then opted to use new low floor stock on some routes.
Places like Stuttgart and Hannover went all the way in gauge and or platforn conversiom.