What is the main factor determining the emergency braking distance of a tractor?

Explanation

Correct answer: The type of surface on which the vehicle is travelling.

Braking effectiveness is directly related to the grip of the tyres on the road surface, that is, the coefficient of friction. The wet asphalt surface shown in the picture, which is also covered with leaves, has significantly lower grip than a dry and clean road surface. In such conditions, the emergency braking distance is significantly increased, which makes the type of road surface a key factor.

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