Well it looks like the Duke Nukem Forever of re-signaling projects has finally run its course. While The venerable DOCK tower may have been celebrating its 80's birthday this year, the project to replace it was well into it's second decade. DOCK was built along with the equally magnificent Newark Penn Station and sat just to the east where it could oversee the operation of three movable bridges over the Passiac River. An impressive structure it sat three levels about the track with the ground floor housing control equipment for the bridges' power supply.
The last of the main line NEC towers, DOCK had previously run as a trio with UNION to the west and HUDSON to the east all the way into the early 21st century. Even after HUDSON closed in 2003, the team of DOCK and UNION had remote control of every interlocking between them with trains being "paper" dispatched from the Section B dispatcher in NYC. Ironically the height of DOCK's power came in the mid 2000's when it was given control over LANE, HAYNES, HUNTER and CLIFF interlockings to the west and REA interlocking to the east. In fact the tower was staffed by no fewer than 5 people during the peak periods, a Train Director, three levermen and a telegrapher. Together they worked a series of modern unit level panels on either side of a large 155 level US&S Model 14 interlocking machine.
Because of DOCK's importance and traffic density, the re-signaling programme had to proceed very carefully. Slowly colorized signals replaced the PRR amber ones, electric points replaced the pneumatic ones. DOCK's extended territory was transferred to the Section B dispatcher and finally on Armistice Day 2017, the whole operation was shut down.
While I doubt the tower will be demolished, I am not sure of what exactly it's function will be. C&S hangout or will the bridge tenders still show up from time to time to raise and lower the three lift bridges?
A blog devoted to explaining the ins and outs of North American railroad signaling, past, present and future. This blog seeks to preserve through photo documentation the great diversity and technical ingenuity of 20th century signaling and interlocking hardware and technology. Related topics cover interlocking towers and railroad communications infrastructure.
Note, due to a web hosting failure some of the photos and links may be unavailable.
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Tuesday, November 14, 2017
Tuesday, November 7, 2017
Site Update / Service Disruption
So I wanted to do a quick post about the state of the blog. You may have noticed that a lot of the links and photos (at least more than usual) are broken. This is because over the last 12 months I first lost my backup web hosting due to Chinese web crawlers and then lost my main web hosting due to a thermal event. Fortunately I had had long since adopted a policy of using Google Photos to host the images presented directly on the pages, but some of my early essays relied entirely on the private server (along with all direct links).
So while my private web hosting is likely to be out of commission through Christmas or possibly January, I am using the opportunity to go back through and convert all the major photo essays into using Google Photos. I'm pretty much starting at 2011 and working back with the PRR Main Line Survey and METRA Tower Survey getting first priority. I am also using this to fix any other problems with the pages like factual errors or omissions (for example on the Main Line Survey I completely forgot CP-UN). I am NOT updating the pages to reflect current reality, they will remain creatures of their time.
Thank you for your patience. I'm sure many long time viewers can remember similar outages in the past. We got through those and I'll get through this one. Still, I could use another backup host so if anyone has the ability to give me a free account on a webserver somewhere please send me a message ;-)
Also, if someone needs any particular page fixed sooner, again message me and I'll move it to the front of the line. Thanks for all your support over the years, I really appreciate it!
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| Not a complete dumpster fire, yet... |
Thank you for your patience. I'm sure many long time viewers can remember similar outages in the past. We got through those and I'll get through this one. Still, I could use another backup host so if anyone has the ability to give me a free account on a webserver somewhere please send me a message ;-)
Also, if someone needs any particular page fixed sooner, again message me and I'll move it to the front of the line. Thanks for all your support over the years, I really appreciate it!
Thursday, October 26, 2017
Toronto Scott Street GRS 5B Machine Video
A local Toronto newspaper posted a neat tour of SCOTT ST interlocking tower and its 1930's vintage GRS 5B Machine. The 5B's were the last iteration of the GRS nee-Taylor "pistol grip" style interlocking machines and was typically used in only the largest layouts due to its extra beeft lever-slides and, as you can see from the video title card, the ability to enter the machine itself for maintenance.
The three towers of the Toronto Union Station complex, JOHN ST, SCOTT ST and CHERRY ST, are part of the too big to fail club along with TOWER A-2 and CNW LAKE ST. However for the last decade or so even these largest, busiest towers have been falling due to the general allergy of employing human workers. The video itself mentions that SCOTT ST is scheduled to close in 2019.
Fortunately I was able to get some photos of it back in 2002. Unlike a lot of surviving towers, like METRA 16TH ST, the Toronto GRS plants have been kept in very good condition and you can see from the video that the interior doesn't look especially antiquated. Who knows, maybe they will get turned into some sort of living tourist attraction like HARRIS.
The three towers of the Toronto Union Station complex, JOHN ST, SCOTT ST and CHERRY ST, are part of the too big to fail club along with TOWER A-2 and CNW LAKE ST. However for the last decade or so even these largest, busiest towers have been falling due to the general allergy of employing human workers. The video itself mentions that SCOTT ST is scheduled to close in 2019.
Fortunately I was able to get some photos of it back in 2002. Unlike a lot of surviving towers, like METRA 16TH ST, the Toronto GRS plants have been kept in very good condition and you can see from the video that the interior doesn't look especially antiquated. Who knows, maybe they will get turned into some sort of living tourist attraction like HARRIS.
Wednesday, October 18, 2017
HAMILTON Closes and Other Bad News
I just learned from a contributor that the famed B&O CPLs at HAMILTON interlocking in Hamilton, OH were cut over this past weekend. One can also assume that surrounding CPLs have also been replaced. Unlike the Broadway show there will be no touring production.
In other bad news, replacement signals have gone up at CP-ROCKVILLE and CP-HARRIS, which so far has seemed immune from NS's PRR Main Line signaling blitz. The "new" PRR PLs at Rockville will be an especially hard loss. The signaling dates from the late 1980's.
I can also report that the pneumatic point machines have been replaced by electric M23's at CP-HUNT and on the former N&W H-Line, the last bunch of PLs on the northern segment have also fallen.
Finally, the new signals at CP-ALLEN have cut over, replacing former Reading searchlights. Status of the eastern Reading Line Rule 251 ABS is unknown at this point.
In other bad news, replacement signals have gone up at CP-ROCKVILLE and CP-HARRIS, which so far has seemed immune from NS's PRR Main Line signaling blitz. The "new" PRR PLs at Rockville will be an especially hard loss. The signaling dates from the late 1980's.
I can also report that the pneumatic point machines have been replaced by electric M23's at CP-HUNT and on the former N&W H-Line, the last bunch of PLs on the northern segment have also fallen.
Finally, the new signals at CP-ALLEN have cut over, replacing former Reading searchlights. Status of the eastern Reading Line Rule 251 ABS is unknown at this point.
| Wrong railing no more. West on former E/B tk 2. |
Wednesday, October 11, 2017
METRA Cab Ride Videos Courtesy METRA
The METRA commuter rail network has been seeing a lot of re-signaling as of late, but there is still a lot of interesting stuff out there like searchlight signals, CNW signal bridges, ATS shoes, Rule 251 operation and a few open and closed interlocking towers. Thanks to METRA's use of gallery cars there are quite a few railfan window videos from METRA trains floating about on YouTube, however earlier this year a new source came on the scene, METRA itself.
Taking a cue from Chicago's CTA, METRA has embarked on a project of creating HD head end videos of all its major commuter routes, both inbound and outbound. While they aren't the most exciting (no effort was made to video express runs) they do capture the current state of the signaling hardware as well as live signal behavior (as opposed to everything just displaying Stop).
The videos are going up every few weeks. I am looking forward to the UP West and UP North lines as both of those have a lot of surviving CNW features as well as ABS operation.
Taking a cue from Chicago's CTA, METRA has embarked on a project of creating HD head end videos of all its major commuter routes, both inbound and outbound. While they aren't the most exciting (no effort was made to video express runs) they do capture the current state of the signaling hardware as well as live signal behavior (as opposed to everything just displaying Stop).
The videos are going up every few weeks. I am looking forward to the UP West and UP North lines as both of those have a lot of surviving CNW features as well as ABS operation.
Wednesday, October 4, 2017
PRR LAMOKIN Tower Demolished
I am sad to report that one of the least visible (and least structurally sound) towers on the NEC was just swept into the landfill of history. LAMOKIN was located at the junction of the old PRR Chester Creek Branch between the presend day BALDWIN and HOOK interlockings. LAMOKIN was closed in 1972 when the lightly used Chester Creek Branch was done in by Hurricane Agnes. Since then it has sat, decaying, along side the NEC,hidden from the north by the equally historic Lloyd St Bridge.
The tower, built as near as I can tell around 1900, is similar to PAOLI, BRYN MAWR and CLY with a brick base and a wooden operating floor. The slate roof had completely deteriorated and it was only a matter of time until the tower burned down or collapsed. When it was open the tower controlled a trailing point ladder that allowed access to the Chester Creek branch to and from the north. The machine was an electro-pneumatic type and you can see the remains of the air plant in the above photo.
As I rarely had a reason to be in the area I never got a good set of photos of the tower and although I passed by on Amtrak many times a year, it was always out of sight and out of mind. Just poignant reminder to always get photos of interesting things while you can.
Ultimately it appears that the demise of the tower was prompted by the demolition of the adjacent Lloyd St bridge as it was simply prudent to demolish both at the same time. All that remains is a patch of crushed grey stone. Oddly enough, the tower has its own Wikipedia page. Looks like I'll have to update it :-\
The tower, built as near as I can tell around 1900, is similar to PAOLI, BRYN MAWR and CLY with a brick base and a wooden operating floor. The slate roof had completely deteriorated and it was only a matter of time until the tower burned down or collapsed. When it was open the tower controlled a trailing point ladder that allowed access to the Chester Creek branch to and from the north. The machine was an electro-pneumatic type and you can see the remains of the air plant in the above photo.
As I rarely had a reason to be in the area I never got a good set of photos of the tower and although I passed by on Amtrak many times a year, it was always out of sight and out of mind. Just poignant reminder to always get photos of interesting things while you can.
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| LAMOKIN in 2002, still showing its PC Green and a bit more roof. |
Tuesday, September 26, 2017
Some NS News
I had a couple of NS signal alerts I wanted to share. The first is that apparently the cut over on the Ohio portions of the Nickle Plate Line is fast approaching so go get your photos while you can.
I also heard that new signals are now up at CP-CANAL and CP-JU on the Reading Line, east of Allentown Yard. On my previous trip back in May, both of those interlocking were as up yet untouched.
Finally over on the PRR Main Line I was documenting the old signals at CP-BANKS and I noticed some interesting with the new signals and how it might fit in with the Rule 562 operation. Currently, all eastbound signals at CP-BANKS can display Approach Medium because it is back to back with CP-ROCKVILLE on track 2. (The signals on Track 1 and the siding can display Approach Medium as per the Conrail practice of allowing trains to diverge over those indications if the previous signal gave proper warning of the first diverge. Basically a poor man's Medium Approach Medium.)
The new eastbound NS signals set out for CP-BANKS are not set up for Medium Approach Medium on tracks 2 or the siding, nor is Approach Medium available for track 1. I suspect that NS is using the new cab signal only operation to restore the additional block and improve capacity at modest cost. In fact I have seen a number of new relay huts away from current signal locations or grade crossings so NS could be trying to actually get something out of the new signaling system apart from lower costs.
I also heard that new signals are now up at CP-CANAL and CP-JU on the Reading Line, east of Allentown Yard. On my previous trip back in May, both of those interlocking were as up yet untouched.
Finally over on the PRR Main Line I was documenting the old signals at CP-BANKS and I noticed some interesting with the new signals and how it might fit in with the Rule 562 operation. Currently, all eastbound signals at CP-BANKS can display Approach Medium because it is back to back with CP-ROCKVILLE on track 2. (The signals on Track 1 and the siding can display Approach Medium as per the Conrail practice of allowing trains to diverge over those indications if the previous signal gave proper warning of the first diverge. Basically a poor man's Medium Approach Medium.)
The new eastbound NS signals set out for CP-BANKS are not set up for Medium Approach Medium on tracks 2 or the siding, nor is Approach Medium available for track 1. I suspect that NS is using the new cab signal only operation to restore the additional block and improve capacity at modest cost. In fact I have seen a number of new relay huts away from current signal locations or grade crossings so NS could be trying to actually get something out of the new signaling system apart from lower costs.
Labels:
Conrail,
NKP,
NS,
position light,
PRR,
PRR main line,
Reading,
signaling
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