Manoeuvres

When is the use of the horn or acoustic signal permitted?

Reviewed on 17 Jul 2026

Question image: When is the use of the horn or acoustic signal permitted?
  • A To greet other drivers
  • B To hurry up the vehicle ahead
  • ✓ To avoid a possible accident or, outside of built-up areas, to warn of the intention to overtake.
  • D At any time within built-up areas

Why this is the correct answer

The horn is legally permitted only to prevent an imminent accident or, outside of built-up areas, to warn another driver of your intention to overtake. Using it for any other reason, such as greeting others or showing frustration, is prohibited.

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