Body over frame construction is best described as which of the following?

• A. A ladder-like frame with two parallel rails joined by cross members
• B. A unibody design with no separate frame
• C. A space frame constructed from tubing
• D. A monocoque chassis design

Answer: (A)

Body over frame construction places a separate rigid frame beneath a non-structural body. The frame is typically ladder-like, with two parallel rails connected by crossmembers, forming a strong backbone that supports the drivetrain, suspension, and chassis loads. The body is mounted on top of this frame and mainly handles occupant space, cabin comfort, and exterior protection, rather than bearing major structural loads. This is distinct from unibody designs, where the body and frame are integrated; from space frame assemblies built from tubing forming a separate skeleton; and from monocoque designs where the shell itself carries most of the loads.