I have 3 stations connected via single track lines like a Y (A nd B at the top, C at the bottom).
Now I want to make them all a doubleline. The first problem arise, when the right track coming from C has to turn left to go to A and so crossing the track coming from B to C.
My first approach was to enter two switches, instead of the needed crossing. This works for a while but reduces the speed on the main line B to C.
What I want now is to replace the switches by a tunnel or bridge. How can I force tracks to rise on a ramp or dig into the ground?
Thanks!