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A1Difficulty 2/5

Your helmet has suffered a knock. Could this knock affect its effectiveness?

Correct answer

Yes

Yes. An impact can damage the structure or energy-absorbing material and reduce protection even without obvious external damage. There is no general 30 km/h threshold below which damage is impossible. If the helmet sustained a significant impact while being worn, replace it according to the manufacturer’s instructions. If in doubt about a knock or dropping the helmet, consult the manufacturer before using it again.

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All options

  • Yes

  • Yes, but only if that knock was caused by a fall at a speed of over 30 kilometres per hour

  • No, because even though it may deteriorate somewhat, the structure of the helmet is never damaged by a knock

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