The Apple Maps interface is really nice and now we have speed camera alerts here in the UK...
I am driving to the continent next week and looks like its still too early for Apple Maps to be used on a long drive like that, I read cameras and speed limits are not broadly available in some countries...
https://www.apple.com/uk/ios/feature-availability/#maps-standard
So I think is best to go back and use good old Waze - their Carplay interface is not the cleanest but as an app looks like it still has the best set of overall features.
Note that I tried Google Maps today, a short drive but speed camera alerts are not showing around me...