How do those Google Driverless Cars avoid things darting onto the roadway?

Why, should it run over one and not the other? As for cardboard boxes, I’d avoid them also, since you have no way of knowing what is inside.

I drive the same roads the Google cars drive, and I can assure you we’ve got tons of conflicting lane painting/no lane markers here. Including some right near Google HQ. I’m pretty sure it can handle that.