I've encountered this Zs signal (the red cross with 3 dots above it) a few times on different routes, but what does it mean? I couldn't find anything about it myself and am curious to find out what it means .
Possibilly, but the picture below is usually used to denote that the train will enter a section of track in the opposite direction normally.
This signal is a bug. I don't know what it is trying to represent but this aspect doesn't exist. The red colour already shows that this wouldn't be a real aspect because red is only used for signals at danger and for nothing else to avoid confusion. I think they are meant to be Direction Indicators (Zs 2 / Zs 2v) but for now, you can just ignore them. Zs 2 (Direction Indicator) Zs 2v (Distant Direction Indicator)
Actually that "X" symbol is a bug - it was put there by the signalling system author so that any time the signal tries to show some aspect it isn't capable of showing it puts that up instead. Please ticket where and how you saw it so they can go back to the engineering team to investigate Thanks!
Thanks for the information. I have submitted a bug report in the appropriate section of the forums. Also submitted a ticket on the DTG support site.
That signal bug appears at the area of Olching on Hauptstrecke München-Augsburg at the split signals. Both directions are bugged and it occurs on all RE services leaving the Express track to go onto the regional track and in direction towards München it occurs on all signals from the regional line entering the express track going towards München. So I would recommend checking the signals at the Olching-Area for the RE services because I encountered them only there.
Exactly where I encountered it as well: I was EB near Olching. However, I was in a freight that I delayed so that it would encounter the same delays some of the EB regionals do.