What are the types of rigid chassis and articulated commercial vehicles?

Rigid chassis commercial vehicles have a fixed frame and include types like box trucks, flatbed trucks, and vans. Articulated vehicles, on the other hand, consist of a prime mover (tractor) and one or more trailers, allowing for greater flexibility and maneuverability; examples include semi-trailer trucks and articulated buses. Each type is designed for specific loading capacities and operational needs, catering to various transportation demands.