Nice pics Flusi may i ask what rolling stock class are those? Are they german U-Bauhn trains?
The (mainly) solid blue one I can tell you is Moscow Metro (so Russian), I believe the other ones are as well, but I'm not 100% certain on that. http://railroadsim.net/en/downloads/trainz/subway/routes
The only German U-Bahn trains I know of in Trainz are the Berline U-Bahn, which are yellow & the Frankfurt U-Bahn, which are Teal.
peter