This automated VNA storage setup uses wires installed into the concrete floor to guide the MHE. MHE vehicles are equipped with a pair of sensors that detect the wire; one on each longitudinal end on the bottom of the truck, which are connected to a control system that locks the steering in place once entering the aisle. The sensors detect a low frequency signal emitted from the wire embedded in the floor.
This method of guidance in the VNA is an efficient one as it:
The VNA guidance system chosen must be incorporated in part of the concrete slab design, as the embedded wires will affect the underlying reinforcement. There is a relatively small chance that saw cuts for the wire installation can induce cracks in the slab.