PURPOSE: To receive update information from an information originating station and to automatically update storage information in the storage means of a storage medium by providing the storage medium with a reception means, an information storage means, a control means and an incorporated power source for feeding,

CONSTITUTION: The control means 17 makes the storage means 14 to store update information received from a reception circuit 11 and judges the contents of a command given by the operation of an operation switch 16 to control the storage means 14 so as to read message information for a driver from the storage means 4. Furthermore, a display means 15 is controlled to display the message from the storage means 14. Then, in a state where the storage medium (IC card) is removed from a card reader, a storage battery 18 feeds power to each part in the IC card. On the other hand, in a state where the IC card is inserted to the card reader, feeding from the storage battery 18 to each part within the IC card is stopped by means of a switching means but each part is feeded by the battery of an automobile and the storage battery 18 is charged by the battery.