My analysis of the accident from watching the very limited video, is that the accident is mostly the fault of the person crossing the road walking the bicycle, with her head turned totally opposite to traffic looking down at the bike. She was walking on the wrong side of the bike with her back to traffic. Now that said, perhaps, a very attentive human driver with the lights on BRIGHT, not dim, and not looking down at his cellphone MIGHT have saved her life. MAYBE, not certain. With the lights on dim and no reflective clothing or anything on the human or bike, even with the lights on bright, I am not sure she would have been seen in time. Why the robot driver didn't see her in time, I don't know. Because I don't know anything about the sensors and what their capability's are.
All I know is that an attentive human driver would have had a hard time preventing this accident, especially with the lights on dim. As far as the guy behind the wheel, well he was just a passenger, as all of them will be after a few minutes of being lulled into the sense of security and boredom that the robot driver provides.
There doesn't seem to be a reason to even have the human "backup" because he will always be bored out of his gourd, and is in no way able to see and prevent an accident. He might be useful if the car breaks down to call a tow truck or something, but I am sure the car can call for its own assistance as well.