Apparently they have the automated systems, but they were not working, so they were under human operating rules.
Which, in the USA at least, severely limits speed you're allowed to use (because once the only thing between you and gory death is a human, eventually that human makes a mistake).
Which, in the USA at least, severely limits speed you're allowed to use (because once the only thing between you and gory death is a human, eventually that human makes a mistake).