In this paper an uncapacitated multiple allocation p-hub median problem is discussed. The model
minimizes the transportation cost based on inventory service level at hubs through double paths between
hubs. Inventory service level is defined as the percent of inventory shortage of vehicles at hubs according
to passengers demand and replenishment time of vehicles. A real data from 25 nodes of municipality
district 14 of Tehran is used to evaluate the performance of inventory service level in hub networks.
