All new vehicles sold in Europe – including Northern Ireland but not Great Britain – will be required from now on to have intelligent speed assistance technology installed.
A GPS based system probably doesn't pick up signs from parking lots you drive past and similar nonsense, though.
Camera based systems issue a lot of false alarms, because drivers are just supposed to know that they've left a lower speed area and are back on a main road now. You don't have speed limit signs on every intersection.
Gps systems then will have to keep a database of speed limits. As speed limits change, those have to be updated. I wonder for how long a manufacturer will provide updates
Or if manufacturers will simply be required to use the government database. Which has the handy side effect of recording all your travels for law enforcement.