What is this thing?

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#1
What on Earth are these things with the blue lights on top (left of the block signal)?
IMG_20190912_170513403_HDR~2.jpg
I can't figure it out, my buddy who's an engineer and conductor can't figure it out, Google can't figure it out. Please help.
 
#3
Not by this one, I don't think. Here's the full picture.
IMG_20190912_170513403_HDR.jpg
That might be a call box near the base, or it could just be a relay case. Haven't ventured over to look.
 


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