Dan Cuong’s Pallet Flow System uses gravity-driven conveyers to move pallets, each lane contains either roll tracks which require higher quality pallets. The main parts of this storage system are the static racks and dynamic roll tracks. The latter are placed on a declined along the rack and gravity is used to move pallets from one location to another. Each lane contains brakes that control the movement of the pallets. As a pallet is unloaded, the one behind it moves forward. Pallet flow rack suits FIFO inventory systems well since, as loads are moved form the loading to to unloading ends, the first load in is removed first. It is also ideal when pallets must be moved from one area to another without fork lift trucks, such as a production line. Less  dependency on forklift trucks also means more flexibility, lower truck maintenance cost and less forklift damage to racks.