Jim- I know that the Milwaukee Road used a Staff Signal setup in a couple of places on their system out west. This was during early years. One was at their St.Paul Pass tunnel through the Bitteroot Mountains between Idaho & Montana. (You literally entered the tunnel in one state, and emerged in the other state.) Unfortunately, I know little about the equipment. What photos I have seen from nearly 100 years ago, are very fuzzy. It's hard to tell. There is a small platform with the something on it. But was a manual staff? Or ? This is an interesting question! I'd like to know more! BoxcabE50
Jim, The electric staff method of controlling trains on single track routes was very common in the U.K. Please take a look at this site and follow the links Bluebell Railway Signalling The "Bluebell Railway" is a museum railway in south-east England. Hope this helps. John
