When is it permitted to use acoustic signals?
A)When I am driving only on urban roads.
B)When I am driving on any road under any circumstances.
C)When I want to overtake outside a built-up area.Correct
The use of acoustic signals (horn) is very restricted. Its main purpose is to avoid a possible accident on any type of road. Additionally, outside built-up areas, it is also permitted to use them to warn the driver of the vehicle in front of our intention to overtake them.