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Satellite, was the single box was built on the foundation slab?)
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Charles Geletzke Jr. posted
PRR (PC-CR)-DT&I Sugar Street tower in Lima, Ohio on November 1, 1978. (C. H. Geletzke, Jr. photo)
[Note the ironman. According to a 1956 aerial photo, the tower was in the southeast quadrant. So the ironman must have been along the DT&I tracks.]
Charles Geletzke Jr. shared |
At first I thought
this article was saying this crossing still uses the "stop and proceed" rule that was invented in the 1800s as a resolution to
the crossing war and like
Brighton Park used until 2007. That is, thanks to modern communications, even if it is known there won't be a train on the other track for hours, the train approaching the crossing has to stop and look for trains that they know won't be their. Then they have to start and get the train back up to track speed.
But then I read that they do have circuitry and "whenever there’s a problem here, trains have to stop and back up." Control circuitry is designed to be fail safe. That means that if it "gets confused" it will display red in all four directions. It sounds like the current circuitry frequently gets confused. I assume the train backing up and trying again gives the circuitry a chance to get it correct and display green. (As another example of a fail safe design, a traffic light has a separate circuit that does nothing but test if both directions are displaying green at the same time. If it does detect a double green, it overrides the regular circuitry and puts all of the directions into flashing red mode. And I would expect modern equipment to trigger a service alarm.)
The proposed circuitry will place the train detection equipment and signals outside of the city. That way, if a train needs to be stopped because the other track is occupied, it will be stopped out in the country and not tie up several road crossings in the city.
The $2.1 million price tag also includes installing a connection track in the northwest quadrant. I see on a satellite image that there currently is a connection only in the southeast quadrant.
Darren Reynolds
posted six photos with the comment:
Conrails (EX-PRR)
"Sugar St." tower
Lima, Ohio
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Doug Hefty posted
Date/photographer unknown This is Sugar Street tower in Lima, Ohio -- crossing of the DT&I with the PRR Chicago-Ft Wayne-Pittsburgh main line. The order hoops are prepared for the DT&I. Their operating practice had the conductor riding one of the trailing units on the head end with just a flagman on the caboose. That required 3 sets of orders to be hooped up. I worked a C&O tower in Michigan at the crossing of this same DT&I line. It's the only railroad I know of where the common directive by the dispatcher was "copy 4." On this order stand, once the engineer snatches the orders from the middle hoop, the upper one will drop and latch at that position for the conductor. |
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Greg Borwald commented on Doug's post
I think I know who took that. 😊
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It is unusual for a topo map to mark a railroad tower, but there is a square in the southeast quadrant.
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| 1961/62 Lima and 1960/61 Cairo Quads @ 24,000 |
This confirms that the tower was in the southeast quadrant.
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