Re: Take a lesson from railways
" I recall Shinkansen cab videos where the driver must regularly check the status of the two braking systems,"
That makes sense. If there is a glitch that prevents the braking system status from being reported to the control center, the "driver" can report it over an alternative link or slow/stop the train. They are also on hand in case there is a reason that the train shouldn't leave the station. They can also react to being flagged by somebody near the tracks indicating that there is a problem ahead. The train is going so fast that anything too close is going to be fatal one way or the other.