Theory Mastery

Bord c22 gevaarlijke stoffen

C22 = dangerous goods, no number. C17 = length; C22 = closed to vehicles carrying certain dangerous goods, not a dimension

Source: RVV 1990 art. 62 · checked 2026-10-23

How the exam asks it

You are driving a tanker carrying petrol to Vlaardingen. In front of the tunnel stands a round sign with a red border and a diamond-shaped hazard symbol, without a number. What do you do?

  1. You drive on: the sign only warns, so you drive carefully
  2. You do not enter the tunnel: this sign closes it to your load
  3. You drive on: the sign is about vehicles above a fixed length
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Correct answer: You do not enter the tunnel: this sign closes it to your load

False — you confuse this sign with the length sign. The length sign always carries the number of the permitted length; this sign without a number closes the road to vehicles carrying certain dangerous goods

Why learners get this wrong: A round sign with a red border and a hazard symbol only warns of danger; you may drive on if you are careful.

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On a narrow village road near Bergen op Zoom stands sign C6. A motorcyclist and a delivery van both approach. Who may continue?

  1. Neither — C6 excludes all motor vehicles, including the motorcycle
  2. Only the motorcyclist — C6 only excludes motor vehicles with more than two wheels
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Correct answer: Only the motorcyclist — C6 only excludes motor vehicles with more than two wheels

Why learners get this wrong: Sign C6 closes the road to all motor vehicles, so also to an ordinary car.

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In Hoorn a street is closed at its start with sign C1 (closed in both directions), without an additional plate. A cyclist waiting next to you at the junction says: 'That sign only applies to cars, I'll just cycle in.' Is that true?

  1. True
  2. False
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Correct answer: False

False — you assume cyclists are exempt automatically. Sign C1 closes the road to all vehicles, bicycles included; cyclists may only enter if an additional plate with 'uitgezonderd' (except) and a bicycle symbol says so.

Why learners get this wrong: A closure never applies to cyclists; they may always continue regardless of which sign is present.

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Near Alkmaar you approach, in your truck, a road with sign C21 showing 15 t. Your registration certificate states a permitted maximum mass of 18 t. On the weighbridge today your loaded truck weighed 13 t, of which 9 t on the rear axle. Which weight do you compare with the 15 t on the sign?

  1. The 18 t stated as permitted maximum mass on your registration certificate
  2. The 13 t the weighbridge showed today for the whole truck
  3. The 9 t the weighbridge showed today on the most heavily loaded axle
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Correct answer: The 13 t the weighbridge showed today for the whole truck

False — you read C21 as a sign for the mass per axle. A per-axle limit belongs to sign C20; sign C21 is about the total actual mass, the sum of all axle loads.

Why learners get this wrong: Sign C21 looks at the permitted maximum mass on the registration certificate, not at what is actually in the car that day.

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How many different C-signs together regulate length, width, height and mass (C17, C18, C19, C21 — with a number on the sign)?

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Correct answer: 4 borden

Correct: 4.0 borden.

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