Mine often sets the speed limit to 110mph (not even 110kph) on the motorway and I have to reign it in if it's in travel assist set to follow the speed limitIt only happens in UK, when car is not able to read road signs. Known issue with ACC in UK. As I mentioned in other thread, you can drive on the same road, but depending on where you join it, car can behave differently. I'm pretty sure, I will encounter it today driving East on M25, because there are no signs where I join it.