I was seeing an error, that a tunnel was build in the road, very strange to see.
I'm started tying to fix this, learning that is has to do with railroad tunnel.
The single track easy to do, y-value 0.5.
Double existing one, no change
3 tracks, looks okay but not, good enough yet.
Now see, in the streets, no tunnel in the lua file! trying to understand that fisrt
any help on this will be welcome