What type of frame is commonly used in unibody construction?

In unibody construction, a structural frame that integrates the body and chassis into a single unit is the most appropriate choice. This design is fundamental to unibody construction as it provides enhanced strength and rigidity, which is necessary for safety and performance. By combining these elements, unibody structures can achieve a lighter overall vehicle weight compared to traditional designs, which often use separate body and chassis components. The integration also allows for more efficient manufacturing processes and better crash performance, as the entire structure can distribute and absorb impact forces more effectively.

The unibody design fundamentally contrasts with approaches like traditional ladder frames or modular frames, which have different configurations and repair efficiencies.