Originally Posted by
Ogre
I don't care which system mine uses, but it needs to look out the window more often. There are a number of roads which are clearly signposted as one speed limit, yet the digitial map in my car has a different, lower speed limit.
I was browsing through my dashcam footage recently and realised that every time i travel these roads the nice female voice says "you are over the speed limit" and I more often than not reply "not according to the council..."
Nothing whatever to do with the GNSS receiver. That only says what it thinks your geographical coordinates are.
The digital map in your car, that tries to fit those coordinates to the nearest road, will be out of date the moment it is installed. And so many councils are changing speed limits that you would be well advised to ignore any prompts from the car.