So Waymo is pretty decent - generally if Waymo was equal to human performance, the number of times it caused an accident would similar to the number of times other drives caused accidents it was involved in but that isn't the case. Humans drivers are hitting Waymo cars way more.

"First, other vehicles ran into Waymos 28 times, compared to just four times a Waymo ran into another vehicle (and Waymo says its vehicle got cut off in two of these cases). Second, Waymo was only involved in three or four “serious” crashes, and none of them appear to have been Waymo’s fault."

This suggests that if we were to replace all humans with Waymo, at least in the nice temperate snow-less/ice-less cities they are currently driving in, accidents would possibly be cut by 4x.

Very interesting.