What is the main factor determining the braking distance of a moped?
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Correct answer
C. The type of surface on which the vehicle is moving.
Explanation
The question is about the main factor that determines the braking distance of a moped. It is the type of surface on which the vehicle is moving - answer C.
Braking distance depends above all on speed and on the grip of the tyres on the surface. On dry, rough asphalt a moped will stop soonest, on paving blocks, cobbles or gravel clearly later, and on a wet, sandy or icy roadway the braking distance can become several times longer. The amount of fuel in the tank (answer A) changes the mass of the vehicle by a few kilograms, which has no practical importance. The size of the vehicle (answer B) does not in itself determine braking - a moped and a large motorcycle with brakes in good working order can stop in a similar distance. When you ride onto a slippery or loose surface, you immediately slow down and increase your following distance.
Legal basis: Art. 19 para. 1 of the Road Traffic Act (Prawo o ruchu drogowym)