I don't have any scientific proof but only a personal observation on this. This is the exact reason why I stopped using Apple CarPlay on my car but instead relying on (iDrive) integrated navigation. Here's my comparison with BMW's iDrive system:
- Apple CarPlay (or Google Maps) show you a very focused view on the current road. This will cause a massive distraction as the screen is updated very frequently with changing road conditions. However with the car's integrated (iDrive) system I zoom-out and see the overall path.
- CarPlay and Google Maps have way too many voice directions compared to iDrive. If I have to go straight, navigation should keep it quiet. This way I can focus much more on the road and the signage rather than looking at the screen.
- As a downside, CarPlay or Google Maps seem to suggest better routes time to time, but the total trip duration will not change any more than ~5%, which I'm completely fine with considering the above pro's it provides.
- Apple CarPlay (or Google Maps) show you a very focused view on the current road. This will cause a massive distraction as the screen is updated very frequently with changing road conditions. However with the car's integrated (iDrive) system I zoom-out and see the overall path.
- CarPlay and Google Maps have way too many voice directions compared to iDrive. If I have to go straight, navigation should keep it quiet. This way I can focus much more on the road and the signage rather than looking at the screen.
- As a downside, CarPlay or Google Maps seem to suggest better routes time to time, but the total trip duration will not change any more than ~5%, which I'm completely fine with considering the above pro's it provides.