When will self-driving tech consistently prevent crashes?

One aim of autonomous driving technology is to take the human element out of the driving ecosystem with an eye toward preventing collisions. But right now, autonomous driving technology can’t guarantee it will detect and react to road hazards earlier than a human driver. It involved an Uber-owned Volvo SUV outfitted with autonomous driving technology. The key question remains: could a human driver have done a better job of avoiding the collision than the autonomous vehicle? The fact that it didn’t raises difficult questions for developers of autonomous driving technology.