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A1Difficulty 3/5

On the same motorcycle, with equal load and comparable conditions, what usually happens when maintaining 120 rather than 90 km/h on a motorway where both speeds are permitted?

Correct answer

Fuel consumption per kilometre usually increases.

Fuel consumption per distance travelled usually rises. Higher speed increases air resistance and the power needed to overcome it; the actual effect depends on the motorcycle, gear and conditions. Speed alone does not improve aerodynamic design or shorten braking distance. The legal maximum is not compulsory: adapt speed for safety.

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  • Speed alone improves the aerodynamic design.

  • Braking distance becomes shorter because you travel faster.

  • Fuel consumption per kilometre usually increases.

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