The **chassis** and the **bodywork** of the vehicle are fundamental elements of **passive safety**. The chassis is the internal structure that supports all the parts of the vehicle, while the bodywork is the external metal structure that covers it.

- In the event of an accident, both the chassis and the bodywork are designed to **deform** in a controlled manner. This deformation absorbs part of the impact, which helps to **protect the occupants** of the vehicle by reducing the force transmitted to their bodies.

- The main function of these elements is not to replace other safety devices such as **seat belts** or **airbags**, but to work together with them to maximize passenger protection.

- Although the bodywork also contributes to the **aesthetics** of the vehicle, its main function is safety, not appearance.


Therefore, one of the essential functions of the chassis and bodywork is to **protect the occupants of the vehicle** in the event of an accident.