What should you note when using your navigation system?

You answered correctly. When using a navigation system, you need to ensure that the system accounts for your vehicle's dimensions, especially if you are driving a larger vehicle, to avoid unsuitable routes. Also, any mounted mobile navigation systems must be placed so they do not block your forward view, in accordance with German regulations about driver visibility and safety. However, the system's calculated arrival time does not factor in mandatory driving and rest periods; it's only an estimate based on distance and traffic. Always plan your breaks independently and do not rely on the navigation system for legal rest requirements. This helps ensure road safety and compliance with driving laws in Germany.