Talk:New York City Subway chaining

message: I don't understand the description of the IND zero point; in which direction is the line drawn from W 4th station? Specifically, what's the chaining number of W 4th? --SPUI (talk) 22:35, 8 Feb 2005 (UTC)
thread_title:  IND Zero Point? 

message: Great work on the table, Larry!! 
Here are some observations:
* We need to distinguish between historic and current issues, especially which parts of chaining lines have been abandoned or changed. I know this is much easier said than done.
* Line A - The info given is historical. Line A now is in two sections. The first section is from 57th Street to south of Prince Street. The second section runs from the middle of the Manhattan Bridge north side to Stillwell Avenue.
* Line C - Lower level of 9th Avenue is still chained C. It is not abandoned, it just doesn't see passenger service. The structure from Fort Hamilton Parkway to Ditmas Avenue is demolished. The original Line C ended at the curve into West 8th Street station.
* Chambers Street chaining zero - we should really show two different entries. It would be better if the zero location was described as Chambers Street (for Williamsburg and Manhattan Bridge routes)  and Park Row for Brooklyn Bridge.
* Line H - Historically this began at Chambers Street and zero was Chambers Street. The last time I rode these tracks I didn't check the chaining stations. This should have been chained to the 57th Street zero, but I don't know this for a fact.
* Line K - This began at the eastern end of Park Row, not Sands Street.
* Fulton Ferry Line - this began at Fulton Ferry and ended at Kings County Junction, east of Sands Street station. It was chained from Park Row, then backwards from KC Junction.
* Line L - chaining ended at the junction with Line J and Broadway and Lex.
* Line M - began at Sands Street upper level, not Park Row. The current Line M begins at the junction with Line J east of Broadway-Myrtle station.
* Line N - began at the junction with the Myrtle Avenue Line at Hudson Avenue (not a station).
* Line P - no longer exists. It is now Line Q end-to-end.
* Line Q - now runs from Eighth Avenue to Rockaway Parkway. -- Cecropia 05:56, 12 July 2006 (UTC)
thread_title:  BMT Chaining Table 

message: This section is certainly informative, but I have a few concerns about it, which is why I've added a  tag:
*Lack of any references (how can one verify that this is all correct)?
*Inconsistent terminology with rest of subway articles. For instance, BMT Montague Street Tunnel Line, in capitals, suggesting that this is a line that exists; but in fact, on List of New York City Subway lines, there is no such line. Perhaps there should be (see Wikipedia talk:WikiProject New York City Subway#Subway Line rationalization), but at the moment there isn't.
*If "Reverse tying" is important, an example from a line that still exists would be preferable to an example from lines that no longer exist.
*Heavy use of "we" should be reworded (see WP:MOS#Avoid self-referential pronouns).
Again, I wish to stress that I found this very informative, and am casting no aspersions on the effort. Marc Shepherd 16:35, 13 July 2006 (UTC)
thread_title:  Handling chaining junctions 

message: Having ridden 1 trains through the South Ferry loop, and noticing signal numbers, I noticed that the MV chaining zero is definitely not at 96th Street as it was before my edit. If it were, the signal numbers would be MUCH larger than they are. The only image I could find is this one I found on NYCSubway.org. The gap filler signal, 102 PLAT/GF A, is basically signal 102 MV. Track plans show that, indeed the MV zero is located just south of the Bowling Green station (at about M33). R36 12:58, 10 August 2007 (UTC)
thread_title:  About Chaining Zero Edits 

message: IND B is tied and reverse tied to IND A at JAY street, NOT W4th. At W4, B2 966 is roughly a 100 feet north of A2 976. 
The other point I'd add is that IND B has three north ends. B1 and B2 end at the merge with D3 and D4 respectively immediately south(west) of the 53/5th Station, B3 and B4 end at the merge with A1/3 and A2/4 respectively, immediately south of the 59/8th station, and B5 and B6 end at the start of T1 and T2 at the 57/6th station.
98.14.158.206 (talk) 18:10, 3 April 2011 (UTC)
replies: text: Huh? You have a source for that chaining? Acps110 (talk • contribs) 20:49, 3 April 2011 (UTC)
thread_title:  IND Line B 

message: I want to say that IND S is tied to Line T at the intersection of 2nd Avenue and 63rd Street, but this is just after messing around with the ruler tool on Google Earth. I also want to say that points along BMT G tracks 3 and 4 are 100 more than the distance to the zero point (i.e. where A3 and A4 have their zero point, G3 and G4 have a point labeled 100+00). This is after looking at Joseph Brennan's Abandoned Stations entry for Lex/63rd and seeing that the west end of the station, as shown in the diagram on that page, lists G39 as the western end of the station, but that point is labeled in the G139 range in the actual station. Can anyone verify? R36 (talk) 18:28, 6 January 2017 (UTC)
thread_title:  Second Avenue Subway (IND Line S, BMT Line G) 

message: This appears to show IND D Tying to IND A at Chaining point A 1058,  at 36th st/ 8th Ave. The Lower Level is Track D3. Maybe the article is correct though.  — Preceding unsigned comment added by Captian Cavy (talk • contribs) 05:43, 11 January 2017 (UTC)
replies: text: The only way that would be relevant is if D3 had independent stationing between 34th Street and 50th Street. Diagrams make no such indication that this is the case, so any point between A-1058 and A-1082 could be the tying point for IND D. R36 (talk) 21:04, 30 October 2017 (UTC)
thread_title:  IND D Tying Point 

message: IND chaining does not begin at Far Rockaway. About 1986 I documented chaining by taking notes while looking out the front window of trains. I used mostly the numbers on signals. At that time Far Rockaway ended at F940 tracks 1-2, and Rockaway Park ended at F861 tracks 3-4. Tracks 3-4 tied from 1-2. The numbers decreased as it went north. The Hammels Wye junction signal was at F766, and the lowest I saw was F441 where the track leaves the former LIRR to enter the ramp to the Fulton Street El. F441 seems to be about the same distance off K as the K550 I noted on the Lefferts branch. East of Euclid Ave station, K465 and A420 were at switches close together. The total distance to A420 (approximate) is 584, that is, 499 (F940-441) plus 85 (K550-465).
The table here puts chaining zero at Long Island City station (very likely on the original railroad routing via Glendale), instead of at Far Rockaway. I think that works with the chaining I noted in the 1980s. 
The newer chaining starting at FA0 Far Rockaway would reach FA174 at Hammels junction, with Rockaway Park F79 to the same F174, and then the old F441 signal is now F499. Why they undertook the expense of changing it beats me. Reversing does make it run south to north like the rest of the IND-- except for K which is right between F and A (unless that's been renumbered too). For fun, note that continuing the classic route A IND numbering down from A420 would have put Far Rockaway at minus 164!
FWIW I recorded West Fourth Street upper level as A969 to A976, i.e. the nearest signal at each end.  JoeBrennan (talk) 16:58, 15 February 2020 (UTC)
thread_title:  Far Rockaway chaining 

message: It's listed as the Culver line; should there be a note that those tracks are not used for regular service? or was the intent something else? Tduk (talk) 16:04, 10 January 2024 (UTC)
replies: text: I don't understand your question. The table also includes former lines. Kew Gardens 613 (talk) 01:03, 26 January 2024 (UTC)
replies: text: Sorry, I was unclear, I was referring to this portion :
Chaining line	Physical line	North                                        	South
C            	Culver Line  	Ninth Avenue lower level (ties to BMT D)	Fort Hamilton Parkway
Tduk (talk) 04:29, 26 January 2024 (UTC)

text: Possibly - I think we can mark both the north and south cells as "(abandoned)". – Epicgenius (talk) 16:45, 26 January 2024 (UTC)
thread_title:  BMT C