AP definitely doesn't handle construction zones well. That's one of the main differences with human drivers is we look at more than just the road, we can see a construction zone a half mile ahead and read the signs that warn us when we get closer. We know the lanes are about to get messed up and we are ready for it. My wife's Tesla is surprised every time the lanes do something funny. We drove through a construction zone on the highway last weekend where they had shifted the road over and left the old lane lines on the road in addition to the new lines they had just painted, basically turning a 3 lane highway into 6 mini-lanes. The Tesla lost it's mind trying to figure out what to do and I had to take over. To a human it was pretty clear as the old lane lines were faded and the new ones were bright white. As humans the lanes are not our only point of reference, the lanes just keep the cars organized on the road. Until we have an autonomous system that can look beyond just the road and lanes and recognize the environment around the road I'm not sure we'll ever see fully autonomous driving.
A few years ago, I was driving home late at night on a wide interstate highway with a nearly-pristine blanket of snow that fully obscured all the lane lines. The plows had not reached that section of road yet and no one was ahead of me. So I made my own path. It was weird, but obviously safe to any human. I wonder what fully autonomous cars would do in those conditions.
