The use of **clamps on the seat belt** is not recommended because it can increase the risk of injury in the event of an accident.

- The seat belt is designed to protect vehicle occupants in the event of a sudden impact or rollover, preventing them from moving from their seats or being ejected. To be effective, it must be properly adjusted to the body, neither too loose nor too tight.

- Clamps can prevent the belt from fitting correctly to the body. This can cause the occupant's body to hit the steering wheel before the belt acts, increasing the risk of serious injuries.

- The **shoulder strap** of the belt should pass over the collarbone and the center of the chest, while the **lap belt** should be over the hip bones. Any alteration in this placement, such as that which a clamp might cause, can reduce the effectiveness of the belt and increase the risk of internal injuries.

For these reasons, it is important not to use clamps on the seat belt to ensure its proper functioning and the safety of the vehicle occupants.