There is another option...
Now that we can have a lot of different railtypes in a game, you can make a couple of railtypes that only have a difference in tunnel entrances.
Full tile tunnels would do the trick in this case. And you can have different designs on top (grass, concrete, other eyecandy like houses/flowerbeds/etc).
I am (very slowly though, so patience

Also switches and signals will be covered up that way.EG0611 wrote: 17 Nov 2020 08:43 However on 90 degree turns and on large subway station layouts; Dutch Add on doesn't offer anything to cover all rails.
The difference for me will be that I will allow all trains to use those tracks, I know of one trackset that has some parts described above, but that is for 3rd rail (metro) only.
viewtopic.php?f=67&t=49476
But, as I said, I am very slowly working on this.