Tram-Train Interface Signs

Given that TpF3 has added tram-trains to the mix, I've started working on creating some signs to be placed at interface sections, signaling the transition between heavy-rail and tram networks.

These signs in particular are based on those found on German tram-train networks and partially genericised.

Also, a set of pictogram signs was created, in case someone wants language-neutral signage.

Something is off with the normal maps of the retainer brackets in Blender's renderers, but I can't figure out what.

Hopefully it won't carry over into the game.

Large sign has 360 tris.

Small sign has 144 tris.

Total of ~8 MB of uncompressed textures thus far.

The greatest challenge for me is bringing these into the game, as I have no idea what to do at this point.

Hope you like the progress thus far. Cheers!

Having put the sign into the model editor, the normal issues appear to be far less noticable, but unfortunately don't seem to disappear.

But another problem arises: My performance-minded way of modelling doesn't seem to play too nicely with the rendering engine and unless I can figure out how to disable shadow-casting for certain meshes, I'll need to relegate this model to LOD1 and model the brackets, decal and board with proper thickness.

Besides that, I'm currently running against a wall trying to get the sign to appear in-game as an edge object. The official documentation is a didactic nightmare for a newbie, community documentation is (understandably) not quite there yet and LLMs are of no use explaining it for dummies as of now.
I guess that's part and parcel of modding a new game.

It would be kind if someone could break it down on how to make a track-side signal/sign in TpF3. All this coding stuff required just to get a decoration into the game is very confusing.

Cheers!