Viet Nam people's horn compression means that ' I am come ' or getting to know that I'm behind or beside. In order to make the people, driving the car, know that there are consequences to not collide.
The hoot of the Vietnamese means 'I am' or to ask the way. Let me know in the back or the side. In order to let people know that driving a car as they do not collide.
The honking of the Vietnamese people means' I am 'or a pardon. To know I'm in the back or at the side. In order to make the driving that car coming will not collide.