Waymo cars handle 4 way stops just fine. When traffic lights go out, that is supposed to be a 4 way stop with appropriate yielding of right-of-way. The proble

Waymo cars handle 4 way stops just fine. When traffic lights go out, that is supposed to be a 4 way stop with appropriate yielding of right-of-way. The problem is that most human drivers can't deal with even a simple, low-traffic stop sign 4-way-stop reliably, and these are complex 4-way-stops with lots of right-of-way changes when power is off. For example, navigating intersections in San Diego during the blackout was a disaster with lots of accidents and that long predated Waymo.