In which specific situation is it permitted to use acoustic signals (the horn)?

Question

DentroTest · Accepted Answer

The General Traffic Regulations allow the use of non-strident acoustic signals in very specific cases. One of them is on narrow roads with many curves, where visibility is reduced. In this scenario, the driver must honk the horn to warn other vehicles of their presence and avoid a collision. It is important to remember that 'inside built-up areas' (towns), using the horn to signal overtaking is prohibited (only headlight flashes are allowed), reserving its urban use solely for avoiding imminent accidents.

In which specific situation is it permitted to use acoustic signals (the horn)?

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