What are the three main frame types of vehicles?

The three main frame types of vehicles include body-on-frame, unibody, and modular. Body-on-frame vehicles consist of a separate body mounted on a rigid frame, which provides strength and durability, commonly found in trucks and SUVs. Unibody construction integrates the body and frame into a single unit, which is lightweight and provides better fuel efficiency, often seen in most modern cars. Modular frames, often associated with modern manufacturing techniques, allow for more flexibility in design and assembly.

While the answer provided includes "Rigid," "Space," and "Unibody," a more accurate list would prioritize body-on-frame and modular frames alongside unibody construction, as they represent the primary categories of vehicle design and construction.

Understanding these frame types is crucial for vehicle rescue technicians because each type presents different challenges and considerations during extrication and stabilization operations.