Incidents per miles is fine with a big enough data set —- but I disagree that it is enough in case of a new technology that can potentially kill. Like let’s say teslas are absolutely safe on the highways, much more than human drivers, but would have a tendency to hit pedestrians much more so than humans. It is possible that it will have a better incident per mile record even though no sane person would legalize them in this case.

> If there are specific conditions where it fares worse those would be pretty obvious to address

Like, if (inSpecificSituation) { payMoreAttention(); } ? This is the actually hard part of the problem, not breaking when something is close and stay in the lane. They can’t even create adequate test environments for the many many special cases that can trivially happen in a city.

Also, how does it see traffic two or three cars ahead? It sounds like a marketing gimmick but correct me if I’m wrong.