Hmm,
also bisher habe ich Zungen nur bei normalen Weichen gesehen, aber nicht bei DKW`s 
Ich lese in diesem Artikel was von Screen-Space-Ambient-Occluison:
T:ANE - Per-pixel Rendering and Post-Processing
Trainz A New Era introduced a whole new rendering engine based upon per-pixel rendering, resulting in much smoother lighting. By this time, much of the Trainz content supported normal maps and per-pixel specular highlights (shiny surfaces).
TANE also introduced HDR and Post-Process effects such as tone-mapping, depth-of-field, bloom, screen-space ambient occlusion, and sun rays.
The underlying lighting and material equations were still derived from the original fixed-function lighting, albeit with a much higher-quality result.
http://www.trainzportal.com/bl…hysically-Based-Rendering
Ist das schon umgesetzt worden oder kommt es erst mit 2018?
Oder kommte es gar net 
Gruss Schmiddi