According to regulations, what characteristics must the sound emitted by a vehicle's acoustic warning device (horn) possess?

Question

DentroTest · Accepted Answer

The General Vehicle Regulations require motor vehicles to be equipped with a device that produces acoustic signals. The regulations specify that this sound must be continuous and uniform (monotone), and have sufficient intensity to be audible without being strident (annoying). Analysis of the answers:   Correct: A continuous and uniform sound ensures that the signal is clearly identified as a civilian warning, distinguishing it from priority vehicle sirens (police, ambulances) which use two-tone or variable frequency sounds.   Incorrect (10 seconds): The use of the horn must always be brief. Emitting a sound for 10 seconds is considered noise pollution and is prohibited unless there is a very specific imminent danger.   Incorrect (After an accident): The horn is an active safety element (preventive), used to avoid accidents or warn of maneuvers (such as overtaking), not to be used after the crash has already occurred.

According to regulations, what characteristics must the sound emitted by a vehicle's acoustic warning device (horn) possess?

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