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How come Korail was removed here? If we are gonna end up counting it twice, what are we supposed to do? Are we just gonna include the data of Korail into the Seoul Metropolitan Subway network? Because those lines qualify for the list Metrosfan ( talk) 00:12, 22 March 2024 (UTC) reply

Korail is a mainline operator. It's a heavy rail system, not a metro system. Rckania ( talk) 18:04, 25 March 2024 (UTC) reply

I thought metros were heavy rail? 2001:A62:142C:9802:C15C:FFA8:C202:7093 ( talk) 03:39, 13 April 2024 (UTC) reply

There are many unsourced and fantasist metro systems in these categories. I suggest removal of all the unsourced metro systems. Also, it should be clarified what should the ''planned'' section contain. How can we even source this ? Some articles with some politicians promising the construction of an hypothetic metro system doesn't sound like a valid source. I vote for the removal of this section. Capt'n London ( talk) 15:03, 3 April 2024 (UTC) reply

Yeah, there's a reason the inclusion was always "shovels in the ground". I objected to the addition of a "planned" section for that very reason: no actual physical infrastructure exists, so they are not a system yet. Saint until some actual construction happens and put them in that section when it does. oknazevad ( talk) 09:44, 5 April 2024 (UTC) reply

actually sometimes infrastructure for a planned metro exists before it is ever built. This may range from small tunnel segments to entire railroads or elevated lines which were built at some point in the past - sometimes with the explicit goal of conversion to metro but sometimes not.

Just look at the history of Athens Metro or Vienna U-Bahn or the Zürich U-Bahn and Cincinnati subway that never were but which still have/had tunnels you can See... 2001:A62:142C:9802:C15C:FFA8:C202:7093 ( talk) 03:36, 13 April 2024 (UTC) reply

No, in those cases construction had begun, but was abandoned before opening, not plans being cancelled before construction began. Infrastructure can't exist before it's built. oknazevad ( talk) 09:39, 11 June 2024 (UTC) reply

I have removed the planned section based on the long-standing consensus seen in the talk page archives multiple times. It was added without discussion despite being previously rejected multiple times. It must not be re-added based on WP:CRYSTALBALL. oknazevad ( talk) 09:53, 5 April 2024 (UTC) reply

Absolutely. Ymblanter ( talk) 10:59, 6 April 2024 (UTC) reply

Should the Liverpool Overhead Railway or – if they existed – other systems which met the standards now associated with the term and now either no longer do or no longer exist be listed here? And if so, how many entries would such a list have? 2001:A62:142C:9802:C15C:FFA8:C202:7093 ( talk) 03:30, 13 April 2024 (UTC) reply

If the former Liverpool system was fully independent, then I think it deserves a place on this list. However, I think the list would be rather short. KatVanHuis ( talk) 19:25, 17 April 2024 (UTC) reply

The metro system of Porto has currently 69,7 km of which 10,7 are underground and 86 stations. With the current expansion in will have 80 km and 91 stations. It has currently some 174 million passengers yearly. it should be added to this list. 95.94.100.145 ( talk) 13:42, 28 April 2024 (UTC) reply

It is not a metro. Ymblanter ( talk) 15:58, 28 April 2024 (UTC) reply

Porto Metro is a light rail system, it uses light rail rolling stock, despite of the name Metrosfan ( talk) 09:31, 1 May 2024 (UTC) reply

There are two things I'd like to suggest for this column in the table.

After quickly looking through some threads on the topic, I noticed most of the discussion about this was around 2014-ish. Should dependent territories be listed separately? (The article only contains 3 dependent territories, those being Hong Kong, Macau and Puerto Rico. Looking through other articles, I've noticed a few inconsistencies as to whether, particularly Hong Kong, is listed separately from the PRC. In 'List of metropolitan areas in Asia', it's listed as part of the PRC, but in 'List of largest cities', it's listed separately. Even if the country itself doesn't change, maybe at least a little note to indicate that the system is located in a dependent territory

I'm a little new to editing, so please excuse me if this has already been settled.

Another thing in the whole 'Country' column is the fact that the country cells are unmerged. Really not sure why this bothers me, but I think it would look more aesthetically pleasing if the table had those cells merged.

Again, I have barely ever edited Wikipedia aside from a couple tiny corrections here and there, so please excuse my lack of fluency. Sleepydoge399 ( talk) 10:23, 5 June 2024 (UTC) reply

Hi Sleepydoge399. Regarding dependent territories, I can only say that there is no consensus regarding whether they should be listed separately in various pages, sometimes there are particular reasons to lean one way or the other, sometimes it is a simple editorial choice. Regarding the unmerged cells, I don't know if there is a specific reason for that, it does not seem to affect the sorting. Best, CMD ( talk) 10:31, 5 June 2024 (UTC) reply

Metrovalencia is missing in the list. It is the second longest metro system in Spain, so I think it is relevant to add it. Rgc1994 ( talk) 10:44, 6 June 2024 (UTC) reply

Previous discussions have found consensus that it is light rail, and so it is present at List of tram and light rail transit systems. CMD ( talk) 10:53, 6 June 2024 (UTC) reply

Why are the citations split into subsections? GraemeLeggett ( talk) 07:32, 10 July 2024 (UTC) reply