[CorrectHorseBat]

I'm 99% sure it doesn't use map data (or they bought horrible data in Belgium), but I'm not sure it uses real time detecting software. Maybe it crowd sources data from other Teslas?

I'm sure because it makes mistakes only sign detection software would make. It doesn't know speed limits end at an intersection and makes this mistake all the time. Also sometimes it detects max 10 ton as max 10kmph. I don't think it's real time because it doesn't detect road works speed limits reliably. (But I think there was an update recently saying it's real time now, so maybe it changed)