Comment by nearbuy

I don't think this comparison is meaningful given the sample size of 1 and the differences between the between your datasets. The standard error margins from the small sample size alone are so large that you could not reasonably claim humans are safer (95% CI for Waymo is about 1 per 20 million miles to 1 per 8 billion miles). Then there are the dataset differences:

1. The NHTSA data is based on police-reported crash data, which reports far fewer injuries than the CDC reports based on ED visits. The child in this case appeared mostly unharmed and situations like this would likely not be counted in the NHTSA data.

2. Waymo taxis operate primarily in densely populated urban environments while human driver milage includes highways and rural roads where you're much less likely to collide with pedestrians per mile driven.

Waymo's 90% crash reduction claim is at least an apples-to-apples comparison.