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1. #1788
How can we reduce the noise caused by vehicle movement in populated areas?
2. #1789
How should a route be planned to visit several locations in an environmentally friendly manner?
3. #1790
We can safely descend a slope if we release the accelerator pedal completely and:
4. #1791
Driving short distances with a cold engine is particularly harmful to the environment because this mode of driving implies:
5. #1792
What causes noise that can be avoided?