Talk:Signaling of the New York City Subway

message: The article seems biased toward CBTC. Perhaps references to differing opinions are in order, eh? 98.113.229.245 (talk) 02:34, 13 June 2010 (UTC)
thread_title:  We need references  

message: Well, since my removal of this material was reverted, time to discuss this. I removed it for three reasons. First, it's completely unreferenced, so there's no real way to verify if it's accurate. Secondly, because this material is too detailed for an encyclopedia article, being essentially straight from an operators manual. 
Thirdly, it's not really that relevant; it doesn't describe anything about the planned system, nor anyting about its implementation, which is the focus of the article. It is sufficient to say that the current system is a version of automatic wayside signals, as the article already does, and link to an appropriate article, as again, it already does. Maybe if there were an article on current sgnalling of the subway, these charts woud bring there, but that is it here. And again, it's completely unsourced. oknazevad (talk) 18:46, 9 October 2013 (UTC)
thread_title:  Current signaling system info 

message: The main article says 28 tph, this says 26. Is the 26 the actual and 28 the possible? Lex line already runs close to 30 and that hasn't been updated yet, headways are as low as two minutes though that may be due to rounding error. CBCT and other ATO-related articles, including individual metro aritcles, don't give enough info let alone in a concise manner such as more mention of actual service  headways, not just tph. I've heard of headways on a heavy metro as low as 105 seconds, and possibly even 1.5 minutes, 90 seconds, but I think train length and also dwell time is the limiting factor on NYC subway. B137 (talk) 13:54, 8 December 2015 (UTC)
thread_title:  Canarsie Line CBTC 

message: I'm not the only person who has taken pics of one of these, but I spotted this signal at Hunters Point Avenue (IRT Flushing Line) back in November. I hope I'm not wrong in assuming this is a countdown clock, like on pedestrian signals. ---------User:DanTD (talk)  16:01, 30 December 2017 (UTC)
replies: text: That is the speed required not to be tripped. It should be 20 here.--Kew Gardens 613 (talk) 00:11, 31 December 2017 (UTC)
thread_title:  Signals with digital readouts 

message: I feel as though that this section will become bloated and too large, with too much of a focus on recent events, if it hasn't already. Maybe it could be cut back here and moved to 2017 New York City transit crisis? Thanks.--Kew Gardens 613 (talk) 22:47, 21 January 2019 (UTC)
replies: text: I agree. We should probably leave out the specific details about which lines would be fixed. The last three paragraphs of "Signal modifications", starting with the paragraph that begins with "In summer 2018, the SPEED Unit ..." could probably cut back to one paragraph. epicgenius (talk) 22:57, 21 January 2019 (UTC)
replies: text: I took a shot at trimming it. Looks like much of the relevant info is already in the 2017 transit crisis article. epicgenius (talk) 23:09, 21 January 2019 (UTC)
thread_title:  Timer recalibration/speed increases 

message: , how would you recommend adding information concerning the CBTC Equipment Supplier Interoperability project and the Ultra-Wideband pilots on the Flushing and Canarsie Lines? Thanks.--Kew Gardens 613 (talk) 23:25, 23 June 2019 (UTC)
replies: text: , I personally wouldn't include details about the CBTC projects unless there were significant updates, such as the contract being awarded or the timetable being pushed back. The UWB project should be included, however - this in itself constitutes a significant update since it is the first time we're hearing about a specific location and timeline. I'll take a closer look tomorrow. epicgenius (talk) 02:59, 24 June 2019 (UTC)
thread_title:  June 2019 Updates 

message: In UK get lots of signal failures. Track Circuits fail often. If 2 Track Circuits are connected together with a pair of wires, create a false feed,  signal will show clear aspect, train will rear end another one. Ian C Burnett (talk) 14:20, 13 September 2019 (UTC)
thread_title:  Signalling