New Layout I'm working on - 12m x 12m

Since you're building a rail transport scheme of a capital, and we know what trains you have, we should guess it is Tokyo. But your scheme still looks to me more like Chicago than Tokyo. 

So it's a bit hard to recognize it from your drawing. But nevertheless, I really think you have a great idea, and there will be much fun in realizing it for you and the whole family! Please keep us up to date with the progress of this project, Bijo! 😊

Building Tokyo itself would be a huge challenge The lines I have on the screenshot so far are:

Yamanote Line - full circular route
Ginza Metro Line - Shibuya - Asakusa
Narita Express - Narita - Ofuna via Yokohama/Hachioji via Shinjuku
Tokaido Line - Tokyo - Odawara

Tohoku Shinkansen - Tokyo - Shin-Aomori
Tokaido Shinkansen - Tokyo - Shin-Osaka
Sanyo Shinkansen - Shin-Osaka - Hakata
Kyushu Shinkansen - Hakata - Kagoshima

There are a few more lines that I am adding to that and will have some more stations along the way, but need to find a few more stopping rails.

It's a fun project, and a decent amount of research into the routes and trains used has already gone in I'll post an updated map later, this time with labels