Abstract
In many depopulated rural districts in Japan, it has been hard to run regional retail stores and many of them have closed down. As the result, there has been appeared many residents who feel difficulties to purchase commodities for their own. They are called "kaimono-jakusha" in Japan. To solve this social problem home delivery services by drones are proposed and several social experiments have been carried out. In this time we developed M/G/s queueing models for the drone system depending on the methods of urban operations research. Finally, we derive the number of drones to achieve the expected delivery efficiency.
