I have bigger issues with it reading school zone signs, and advisory limits, as ongoing speed limits.

So I'll approach a school zone, and it drops to 30km/h correctly, but then until the next speed limit sign, it stays at 30. Same with yellow advisory signs for slowing down on turns and such. It'll set the speed limit to that sign, and then won't change it back until the next regular sign.

Well yeah. How else are you going to "move fast and break things?"

Yes, i have a T3. it does. Maybe 'often' is a bit heavy, but in context a one a month occurrence is often, I suppose. Anyway, that's one reason it needs to be supervised. And the cruise control on my other car doesn't track speed limits at all, it needs a lot more supervision.