After being unrestricted on secondary roads for roughly a year, I encountered the 5 mph over-limit AP speed restriction this morning where US50 in Virginia narrows from a divided four-lane section to a two-lane road. I have an AP1 car updated most recently to 2018.12 on 3/28. I don't use AP on that road every day, but I'm pretty sure it was unrestricted a few days ago, so the change is not specifically due to 2018.12. Perhaps it is related to the new maps, or perhaps it is a reaction to the crash in California. I almost never use navigation, so I'm not sure whether I've received the maps download. Regardless, you need limit +8 to avoid backing up a line of cars behind you on that road, so limit +5 renders AP useless there. Very disappointing.