I mean if the kids are in the bushes I'm not sure a human would be able to figure that out either. It's been said before: self driving cars don't have to be perfect, just better than humans. And humans are super flawed.
Humans are flawed but human drivers are way safer than the human detractors would have you think.
Not every human driver has the same risk, but every self driving car will. (Or it will be based on which car you are in rather than how safe you are.) In other words, relatively safe human drivers could actually see their risk levels go up in a self driving car, even it if it statistically safer than all human drivers.