filter-flo_rob
Well-known member
- Joined
- Aug 7, 2008
- Messages
- 184
A good article: CTC signaling.
Although this is from a model railroad website, I find it interesting that this is probably the closest relating to CTC signaling on the big trains. "This model railroad electronics article originally appeared in Mainline Modeler magazine in the December 1994 issue."
This article deals mainly with autoblock and here is a quote from the first paragraph from the conclusion: "Bear in mind that CTC signaling systems are not simple systems. They have evolved over decades to provide the railroads with the train control and safety they need in their day-to-day operations. They are complex and costly, but they are also very effective in moving the most tonnage over the existing trackage safely. There are many different flavors of CTC systems, with each railroad adapting the general system to their specific needs."
Frankly, I can't imagine instituting an interlocking system for model railroading; especially designing a freight yard; however, all those wires would be replaced by rods and manually moving parts. Try designing a system that pulling levers 2 and 7 block out pulling levers 3, 10 and 15, while allowing 5 to be thrown which will then lock 11 and 13 and if 17 is thrown with that combination set forth then allows 2 to be thrown ... you get the point. (am I being too overkill here? Can you tell where my passion lieth ... )
I do miss semaphores, and wig wags. Even the single target block signals are disappearing from the northeast. Fortunately, they are still active on the Greenfield line which is mainly interlocking, but it is a mix of systems, and there are always signal problem delays ... grrrrr.
... yes, this is a commercial site. Standard disclaimer: I've never done business with them, nor do I hold any interests in the firm.
I have a book on railroad signaling written at the turn of the century (20th), and I can not find any-sort of bibilographical citation for it. If someone is looking for diagrams that are specific in nature relating to interlocking signal systems of that ear, I can scan them and send them to you ... let me know. Banjo signals, hi/low ball (don't go there, gentlemen) & stuff like that are fascinating. Colours are equally fascinating as red, amber, and green were not always standard -- white and blue played into this in 19th century training. Some places in Europe, still use these colours.
Can you imagine having the job of filling the kerosene lanterns for the signals?
Rob.
Although this is from a model railroad website, I find it interesting that this is probably the closest relating to CTC signaling on the big trains. "This model railroad electronics article originally appeared in Mainline Modeler magazine in the December 1994 issue."
This article deals mainly with autoblock and here is a quote from the first paragraph from the conclusion: "Bear in mind that CTC signaling systems are not simple systems. They have evolved over decades to provide the railroads with the train control and safety they need in their day-to-day operations. They are complex and costly, but they are also very effective in moving the most tonnage over the existing trackage safely. There are many different flavors of CTC systems, with each railroad adapting the general system to their specific needs."
Frankly, I can't imagine instituting an interlocking system for model railroading; especially designing a freight yard; however, all those wires would be replaced by rods and manually moving parts. Try designing a system that pulling levers 2 and 7 block out pulling levers 3, 10 and 15, while allowing 5 to be thrown which will then lock 11 and 13 and if 17 is thrown with that combination set forth then allows 2 to be thrown ... you get the point. (am I being too overkill here? Can you tell where my passion lieth ... )
I do miss semaphores, and wig wags. Even the single target block signals are disappearing from the northeast. Fortunately, they are still active on the Greenfield line which is mainly interlocking, but it is a mix of systems, and there are always signal problem delays ... grrrrr.
... yes, this is a commercial site. Standard disclaimer: I've never done business with them, nor do I hold any interests in the firm.
I have a book on railroad signaling written at the turn of the century (20th), and I can not find any-sort of bibilographical citation for it. If someone is looking for diagrams that are specific in nature relating to interlocking signal systems of that ear, I can scan them and send them to you ... let me know. Banjo signals, hi/low ball (don't go there, gentlemen) & stuff like that are fascinating. Colours are equally fascinating as red, amber, and green were not always standard -- white and blue played into this in 19th century training. Some places in Europe, still use these colours.
Can you imagine having the job of filling the kerosene lanterns for the signals?
Rob.
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