/usr/share/games/openbve/Data/Compatibility/Signals/signal_post.csv is in openbve-data 1.4.0.5+dfsg-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | CreateMeshBuilder
Cylinder,6,0.075,0.075,6.0
Translate,0.0,2.0,0.0
SetColor,176,176,176
|