That's not the definition of Level 5. As Level 4 can drive without any involvement of the driver or even a driver at all. The difference between Level 4 and Level 5 is operational design domain (ODD) like geofencing. Level 5 on the other hand can drive anywhere a human can from bright and sunny roads, to 10 inches of snow blizzard. to dirt road and un-marked desert and off roads, to muddy and upstreams, to driving ultra dense traffic like india.