What should you factor in when planning your route?

The selected combination is correct because planning your route must take into account both driving and rest periods, as well as the rules of other countries when driving across borders.

In Germany, regulations are in place to ensure safety and compliance during long journeys. The driving and rest periods are crucial to prevent fatigue, which can lead to accidents. Additionally, knowing the rules of other countries is essential to avoid legal issues and ensure a smooth journey when crossing borders.

While the prohibition on driving on public holidays is important, it is not universally applicable across all states in Germany. Therefore, it is not part of the essential factors to consider for route planning when compared to the two other options. Understanding and considering these elements will help you plan safe and lawful trips.