The **seat belt** is a crucial element for the **passive safety** of all vehicle occupants. Its main function is to protect people in the event of an accident, preventing them from moving from their seats or being ejected from the vehicle. This is valid for **all seats in the vehicle**, not just the front or the driver's seat.

- **Universal protection**: The seat belt is designed to protect all occupants, regardless of their position in the vehicle. This means that both front and rear passengers must wear it to reduce the risk of serious injury or death in the event of an accident.

- **Proven effectiveness**: Wearing the seat belt correctly fastened **doubles the chances of surviving** an accident. Since its implementation, there has been a notable decrease in traffic accident fatalities.

- **Mandatory use**: All people in a vehicle equipped with seat belts must use them, both on highways and streets. Exceptions are minimal and specific, such as certain professional drivers or justified medical situations.

Therefore, it is essential that all vehicle occupants, regardless of their location, use the seat belt to maximize their protection in the event of an accident.