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That's the com system, but there are fully automated off-the-shelf systems (com, rolling stock, …). Two examples are Siemens's VAL (Lille, Taipei's Brown, Seoul's U-line, VAL tech has also been used in Lyon's D and Paris's 14 and 1) and Hitachi's AnsaldoBreda Driverless (Copenhagen, Taipei's Yellow, Milan 5, …).

The latter is very popular and getting deployed in several places right now: Honolulu, Thessaloniki, Lima 2, Rome C, …




> Hitachi's AnsaldoBreda Driverless

To nitpick, this is actually Hitachi (the ex-AnsaldoBreda part) and Ansaldo STS (which Hitachi only bought 40% of, and became its own company when Hitachi bought AnsaldoBreda).

Depending on rolling stock and space for equipment, replacing the rolling stock when replacing the signalling equipment might not be required (see, for example, the the London Underground 1995 Stock on the Northern Line).


> The latter is very popular and getting deployed in several places right now: Honolulu, Thessaloniki, Lima 2, Rome C, …

Is Breda really popular? SFMTA forbade Breda from bidding on this latest round of vehicles because the current ones have been so problematic. I don't think Chicago or Seattle had a much better experience with Breda either.


The former AnsaldoBreda… had issues (and that's really an understatement). Now owned by Hitachi, it seems like we aren't seeing the same build quality issues getting into service (though esp. in the earlier days of Hitachi running it, some issues were only found after they left the factory).




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