The cars already know those are intersections with lights. I'm not talking about that part. Just the basic logic that you don't go through at speed unless there is a green (or yellow) light.
The lights out should be treated as all way red, including pedestrians.
>The cars already know those are intersections with lights.
That's not how any of this works. You can anthropomorphize all you like, but they don't "know" things. They're only able to predictably respond to their training data. A blackout scenario is not in the training data.