Vietnam often happens passenger car accidents that many people die. The main reason is due to collisions or the controller is out of control.
If you ever fly, surely you have experienced the effects of air turbulence: it is a sudden shake of the plane when taking off and landing, moving in different directions.
The seat belt does not tighten above the abdomen, where the stomach is tied to the lower abdomen, especially for pregnant women.
Children in a car without a seatbelt or a mis-seated chair are often seriously injured or even die if an accident occurs.