This is strange. - Sensing distance is a good one for sure. At the same time, it's for now a technical issue. So that a viable temporary progress-making soluti

This is strange. - Sensing distance is a good one for sure. At the same time, it's for now a technical issue. So that a viable temporary progress-making solution might be to have an additional vehicle in the autonomous system: a sensing car is in front, and one or more semi-trucks follow. Then the autonomous system far out-senses a human driver. And we get progress even if the cost-proposition becomes a little harder. But otherwise: - Nominal stopping distance as shown include 2.5 seconds of reaction time - fair for a human driver perhaps but hopefully the machine gains a lot of space there. - "Stopping in lane" is as insane in the city as it is on a freeway. We can't seriously consider that a long term solution in the city? Less risk temporarily okay but not a serious solution. (But fair point on this one: if all else fails it is, for now, an option in the city). - Even for humans, driving on the freeway is not a question of perfect judgement. It is about quickly but calmly picking a reasonable solution. Including, in doubt, moving to a safer lane and slowing down while measuring the risk of rear-ending. Nobody asks a human to completely eliminate the risk of rear-ending. That sounds within the range of what software can do? - Jack-knifing and other complex behaviors are probably far better suited to computing solutions - which can sense far more measurements than the humans, independently actuate more control points, and compute actually more or less complete solutions when the human is seat-of-the-pants -ing in real time (with dubious real life record too - see brutal and fatal). Simple no, but all that hard to beat the human sounds absurd (anyone with more input on this?) See for example the drift-parallel-parking stunts achieved with cars. We may not yet be at drift-parallel-parking semi-trucks but anyone here doubts that this is achievable? - Ease and quantity of samples might be a better point. Waymo really got on it and accumulated a lot of driving data. But then also, most of that data by now is city driving. - Will trucks happen before cars? Well, cars are already there so... already answered.