Curves in tunnels

[nitromefan]

I'm trying to build underground systems and it bugs me heaps that i can't put a curve in a tunnel.
Is there any way to get one? Also is it possible making tunnels have on ramps and off ramps coming off the side?

modnote: moved to help requests --whoami

[Václav]

Tu build curves in tunnels -
at first: build tunnel entrance only - with ctrl + building of tunnel
at second: use tunnel icon for building track, it allows you to build tunnel as you need
and after: place stations and signals as you need

and/or read this guide.

That's all what I can do for you.