You want to use a smartphone mounted on your motor vehicle as a navigation device. What should you observe?

Your answer correctly included all the necessary actions to safely use a smartphone as a navigation device while driving. According to German traffic regulations, it is crucial to ensure that you are not distracted while driving.

1. Entering the destination while the vehicle is stationary ensures that you are focused on the road and not preoccupied with the device while driving, which is essential for road safety.

2. Avoiding operation of the device while driving helps minimize distractions and keeps your attention on the road.

3. Using the voice output function allows you to receive navigation instructions without taking your eyes off the road or your hands off the wheel, aligning with safety practices.

Overall, this combination of practices is advised to promote safe driving and comply with the rules implemented to reduce distractions caused by mobile devices.