When planning your journeys, how can you make them environmentally-friendlier?

The combination of options you selected is correct because each choice contributes to reducing environmental impact while traveling.

1. Combining several destinations into one trip helps minimize fuel consumption and reduces the number of trips needed, which decreases overall emissions.
2. Forming car pools is beneficial as it means fewer vehicles on the road, leading to reduced traffic congestion and lower emissions per person.
3. Planning to use public transport instead of personal vehicles can significantly decrease the carbon footprint, as public transportation typically emits less greenhouse gas per passenger than private cars.

Together, these strategies align with German traffic regulations aimed at promoting sustainability and reducing environmental impact. They encourage efficient use of transport resources and aim to protect the environment, which is essential in urban planning and traffic management in Germany. By adopting these practices, you contribute to a cleaner, healthier environment.