george writes:

But you claimed that these rapid transit trains were fully automated.

As I recall, that was the original design intention. BART is not alone, of
course. Here in Paris, line 14 of the subway system is fully automated, so
much so that it continues to run during strikes because it doesn't require any
human beings in the first place.

In general, if a system can operate normally without human intervention, it is
fully automated, even if exceptional situations require human intervention
(beyond certain design points, all exceptions require human intervention in
any system).

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