In Salisbury there are multiple urban and rural locations where the Mercedes' camera doesn't read a speed limit sign, or reads the wrong one. I only get a flashing speed limit sign, but if the camera was linked to the cruise control it would frequently leave me at the wrong speed, some times too fast, others too slow.
In the New Forest the 40 mph signs are painted on the roads. There are no post mounted signs. The camera does not see the road surface signs.

The solution is careful management of all the speed limit signs, replacing damaged ones, moving others and cutting back vegetation. I don't see the County Council doing that. They don't have the resources.

The roads managed by Highways England (the A36) are better.

Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...