The seat belt is a crucial device for protecting vehicle occupants in the event of an accident. For it to function correctly, it is essential that it is properly positioned.

- **Lap belt**: This part of the belt should be positioned over the hip bones, always below the stomach. If placed over the abdomen, in the event of an accident, it can cause **serious internal injuries**. This is because, during an impact, the pressure exerted by the belt on the abdomen can damage internal organs.


- **Shoulder belt**: It should pass over the collarbone, between the shoulder and the neck, and go down the center of the chest. Incorrect positioning, such as over the neck or a breast, can also cause serious injuries.


Additionally, it is important to avoid the **submarining effect**, which occurs when the body slides under the belt during an accident. This can happen if the belt is improperly positioned or the seat is reclined too far back.

Therefore, to avoid injuries and ensure maximum protection, it is essential that the seat belt is correctly adjusted and positioned.