When should you use the horn in traffic?
Question 26 of 45 in the free class B mock exam · Laws & rules.

When should you use the horn in traffic?
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Right answer and explanation
Right answer: C. Only when necessary, for example to avert danger
Unnecessary or reckless use of the horn is prohibited (trafikkreglene § 14 nr. 1). The horn should therefore only be used when needed to warn others of danger, not as a general signal.
Source: Trafikkreglene § 14 nr. 1