In a built-up area, is the use of acoustic warnings permitted?
A)Yes, exclusively to prevent an accident.
B)No.
C)Yes, to prevent an accident or warn other users that an emergency service is being carried out.Correct
# Use of Acoustic Warnings in Built-up Areas
In urban areas, the use of the horn is permitted, but only under **specific circumstances**: to prevent an imminent accident or to warn other users when performing an emergency service (ambulances, firefighters, police). It cannot be used arbitrarily or for mere annoyance, as it is prohibited to make unnecessary use that causes noise pollution in built-up areas.