I've noticed that some locations along the CP in Illinois, Wisconsin, and Minnesota have signals that I really don't understand. I know there are a few CP engineers around here, so hopefully I can get an explanation.
I know a normal Safetran has 3 aspects on it:
Green
Yellow
Red
Searchlight signals only have one, but they are interchangeable. Now on the CP, there are signals with four aspects.
Red
Yellow
Green
???
Does anyone know what that bottom one is used for? I don't recall actually seeing the Yellow one on before, not sure about the placement of the lights.
Thanks,
Steve
I know a normal Safetran has 3 aspects on it:
Green
Yellow
Red
Searchlight signals only have one, but they are interchangeable. Now on the CP, there are signals with four aspects.
Red
Yellow
Green
???
Does anyone know what that bottom one is used for? I don't recall actually seeing the Yellow one on before, not sure about the placement of the lights.
Thanks,
Steve