Vietnam's transport ministry on Thursday requested that traffic police tighten control and impose stricter punishment of horn abuse by vehicles.
The request was made following public complaints over several accidents related to horn abuse.
In a dispatch sent to the general administration of social security, the ministry said complaints about the abuse include continuous honking and the use of air horns which are extremely loud in residential areas.
The use of whistles and horns that fail technical requirements for each vehicle was also a cause for complaint, it said.
Under the government's latest decree, horn-related violations are fined between VND100,000-500,000 (US$5.29-26.45).
The transport ministry made the proposal three days after an accident in which a two-year-old girl was run over by a tanker carrying medical oxygen in Ho Chi Minh City's Thu Duc District.
Witnesses said Le Thi Loan was carrying her daughter on a motorbike, going from the Thu duc Market to Linh Xuan flyover.
When the tanker's driver Nguyen Van Tuan, sounded his horn, Loan braked and the bike fell, throwing her daughter, Dinh Phuong Vy, on the street. She was killed on the spot by the truck, the witnesses said.
However, initial investigations by Thu Duc police reportedly show that witnesses couldn't give testimonies clear enough for them to conclude that the accident was related to the truck's horn.
They were yet to take testimony from Loan and receive conclusions of tests done by the Ministry of Public Security's institute of criminal science.