"The auto-pilot doesn't have any reaction to stationary objects. This is deliberately done to stop the many false alarms that would occur when roadside objects come into the field of view."
Yes, I've seen that explanation a few times. It basically says - "That's how it's supposed to work". Now, I agree that it would be dangerous if an autonomous car slams on the brakes because of a stationary roadside item eg large road sign.... BUT Tesla is basically admitting that it's system is not capable of distinguishing between an object on the roadside and one on the road right in front of it.
That is pretty rubbish