"At any time" is not the same as "at a moment's notice". If the system is robust enough such that the human is always given, say, 5 seconds warning before they

"At any time" is not the same as "at a moment's notice". If the system is robust enough such that the human is always given, say, 5 seconds warning before they need to intervene, they can safely read/write (but not sleep), which would be a huge benefit. Elsewhere in this thread, someone gave examples where a human takeover is needed but there is significant warning time: (1) exiting a highway to an unimproved road and (2) coming upon construction work with human-directed traffic control. Driver attention is monitored with cameras in essentially all Level-2-and-above autonomous cars, I believe. The machine vision is good enough to detect sleeping.