Theory Mastery

Gevaar scherpte opeenvolging zichtbelemmering verkrappende radius

Danger in a bend increases with three things at once: if the bend is sharp, when several bends follow each other closely, and when sight through the bend is obstructed, for example by trees.

Source: Roads & carriageways · checked 2026-10-23

How the exam asks it

You take the same bend near Cauberg first at 30 km/h. If the centrifugal force there has the value 1, what value does the force have at 60 km/h in that same bend?

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Correct answer: 4 x

Correct: 4.0 x.

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At a car park in Vijlen a passenger says: 'Centrifugal force pushes you towards the inside of a bend, not the outside.' Is that correct?

  1. True
  2. False
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Correct answer: False

Why learners get this wrong: Centrifugal force pushes your car towards the inside of the bend.

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On a road near Wittem there is a bend with negative camber. What does that mean for your risk according to the book?

  1. The risk of flying off the bend is greater
  2. The outer bend lies higher than the inner bend, which is favourable
  3. It makes little practical difference to how you take the bend
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Correct answer: The risk of flying off the bend is greater

False — outer bend higher than inner bend is precisely the feature of POSITIVE camber, not negative

Why learners get this wrong: With negative camber the outside of the bend lies higher than the inside, which is favourable.

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Which factors make a bend more dangerous according to the book? (multiple answers possible)

  1. Sight through the bend is obstructed, for example by trees
  2. The bend is clearly marked with a warning sign
  3. Several bends follow each other closely
  4. The bend is sharp
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Correct answer: Sight through the bend is obstructed, for example by trees; Several bends follow each other closely; The bend is sharp

False — a warning sign warns you before the danger, it is not itself a danger factor

Why learners get this wrong: A warning sign before a bend is itself one of the factors that make the bend more dangerous.

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You enter a bend near Vijlen and judge the radius on entry. Halfway through, the bend turns out to tighten more sharply than expected. What is going on here according to the book?

  1. A bend radius is fixed on entry and does not change after that, this must be a different bend
  2. Some bends curve increasingly sharply inward; your first assessment can become outdated
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Correct answer: Some bends curve increasingly sharply inward; your first assessment can become outdated

Why learners get this wrong: Once you have judged a bend on entry, the radius of the bend stays the same from then on — you do not need to adjust your assessment further.

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