Well. Such a system certainly would ignore individual differences. It would have to be up to the appellate court to examine this.
We kind of have this now with red light cameras. The camera says you did a no-no and now the owner of the car is fined. 99+% of the time the camera is correct (assuming that it's programmed honestly) but a small percent of the time there would be an extenuating circumstance.
Good point. I think this happens right now all over the place.
The automated system only needs to be marginally "less-wrong" than the current system in order for it to be preferable.