Earlier quoted context omitted.
That is actually an interesting question. We track how many accidents the automated cars cause, but I'm not sure how many accidents they prevent are tracked.
I’ve had several low-light situations where my Tesla identified a pedestrian and applied the brakes before I did (typically dark clothing on a dark street).
[1] It tends to be more conservative than human drivers, and in weird ways. If a pedestrian seems at all to be moving in the direction of traffic, even if they're on a sidewalk and just meandering a bit, the car will try to evade (not violently, but it will brake a bit and pull to the outside of the lane).