Human drivers who are distracted do that all the time, AP is supposed to avoid that, it is supposed to be alert all the time, but when it sees a stationary object, the result of their algo is, "it must be a sign we can somehow go through"
We need to make it very clear that self driving cars are better than driving drunk, or when you haven't slept in 24+ hours, but if you are a driver who pays attention, don't use this tech.
And it is not that I don't want the tech to take over the world, I wish I could just put my kids in a self driving car and have the car take them to the school that is 4 miles from home, but we are nowhere close to that, even with me in the driver seat, if I only have seconds to take over before I end up on a ditch or worse.