Abstract
A conveyer system can include a first body portion disposed on the inside of a vehicle body, a first roller being disposed on the first body portion, a second body portion having one side hingedly coupled to the first body portion, a second roller being disposed on the second body portion, and a driving system rotating the second body portion, wherein the second body portion can be rotated by the driving system so that at least a portion of the second body portion can be exposed to the outside of the vehicle body, and the second body portion can form a slope in which a distance from the ground can become closer from the outside to the inside of the vehicle body.