Always display rail signals on the side road vehicles drive on.
Configuration file: signalsontrafficside
Command line: -Ys
With this switch, rail signals are displayed on the same side as the one road vehicles drive on. If road vehicles drive on the left side, signals will be on the left side of the track, and same to the right side.
If you are using semaphores, this and the road traffic side will also determine whether you get the British style semaphores (on the left side) or German style semaphores (on the right side). Note that the selection of graphics only happens when a game is started or loaded, so if you change the road traffic side during a game, it will show the wrong signals until you save and reload the game.
This patch was contributed by Marcin Grzegorczyk.