A dry van is a semi-trailer that is wholly enclosed to cover shipments from external elements. It’s designed to carry palletized, loose or boxed freight; dry vans are not temperature-controlled, unlike reefer and cannot carry large shipments, unlike flatbed trailers.

A reefer or refrigerated container is an intermodal temperature-sensitive container used in intermodal freight to protect the goods such as fruits, meat, vegetables, and other similar items from perishing, deteriorating or damaging during transport.

A flatbed truck is a type of large vehicle that can be either rigid or articulated. Its body is just an entirely flat with no sides or roof around the bed. Generally, it is used to carry heavy loads which will not be compromised on lousy weather or unpaved roads.