Hi Wim --
That session, with all the text boxes, pop-up bubbles and locked switches, is by a different hand. And whoever did the session within N3V also added that dwarf signal. I've had a look at the session and can honestly say I dunno why that dwarf don't clear. It should 'cause there is that Signal Man dude between the dwarf and the freight cars further down the track. So sorry ... . Have you tried just driving through the red? If you do, do you get the dreaded "It's Game Over Man, Game Over", which always reminds me of this:
https://www.youtube.com/watch?v=dsx2vdn7gpY
For those who have't seen the tread, I have updated this layout to full TRS19 (TRS19 track, 3D PBR textures, TurfFX grasses, SpeedTrees) standards:
I think it's a considerable improvement over the TMR version.
I put this update into the N3V "system" some time ago, from memory shortly after Adam was born, with the suggestion that it be made freely available to those who had previously purchased the layout. I suspect that N3V must be overwhelmed because I've had no reply. But if anyone reading this wants to give N3V a little reminder of the existence of an update ... .
Phil