G'day, I am curious about grouped Italian railway semaphore signals.
I have managed find some documentation.
I can envisage the principle.
A home blade directly infront of a distant blade on the same post.
The home spectacle plate with a red lens and clear lens.
The distant spectacle plate with a yellow lens and green lens.
But, I would imagine that when both blades are horizontal, at stop, the combined yellow lens and red lens would not provide a distinct red light.
Possibly more like a muddy brown light.
Does anyone know if any of these signals still exist ?
Thanks,
Stevej.