System for the operation and management of a fleet of refrigerated autonomous containers for transporting perishable goods, comprising: containers provided with a passive tag comprising identification information and with an active tag comprising a temperature probe and a recorder connected to said probe and capable of recording the measured temperature values; a gun or means for injecting a refrigerant into the container, which means is provided with a device capable of reading the passive tag of the container, so as to be cognizant of the identification number of the passive tag; and a data acquisition and processing unit capable of carrying out the following operations: receiving said identification information from said device and linking this identification number of the passive tag with the number of the active tag in the container; calculating, as a function of data associated with the logistic travel of the container and physical data of a refrigerant, an amount of liquefied gas to be injected into the container; and providing said gun or injection means with the characteristics of the injection of liquefied gas to be injected into the container.