The stow Atlas® pallet shuttle system consists of a number of Atlas shuttles, the specially designed stow Shuttle-rack system and the local controlling system (STC). The stow Atlas® 2D is a self-powered pallet carrier, which may transport pallets on both the rails of the storage lanes and the rails of the main lanes. The so-called crossings or intersections between the storage lanes and the main lanes are designed for a smooth transition of the stow Atlas® 2D shuttle, unloaded but also loaded. In a semi-automated warehouse the pallets are received and picked at the frontside of the pallet rack by means of a conventional forklift truck. The orders are issued from the client’s WMS to the local warehouse control system (STC), which among others selects the stow Atlas® 2D to perform the specific task and determines its optimum path. The occupancy rate of the various storage lanes, the status and operation of each shuttle and an overview of all performed tasks can be consulted on the STC or are transferred to the client’s main system.