There are dozens and dozens of fully automated train lines in fully automated operation: https://en.wikipedia.org/wiki/List_of_automated_urban_metro_subway_syst

There are dozens and dozens of fully automated train lines in fully automated operation: https://en.wikipedia.org/wiki/List_of_automated_urban_metro_subway_systems https://en.wikipedia.org/wiki/List_of_automated_urban_metro_...