Narrow lane shelf, also known as VNA shelf, refers to the system when the forklift truck selected for the conventional beam type shelf is a three-way forklift truck. Compared with the conventional beam shelf, the width of the narrow roadway shelf is much smaller than that of the beam shelf, generally about 1600-2000mm, and the corresponding space utilization rate is increased by about 20%. In addition, narrow roadway shelves are provided with mechanical guide rails on both sides of the passage as a guide for three-way forklift.