1. A device for recording itinerary data of a vehicle, the device comprising: a receiver system for receiving wirelessly transmitted data for identification of a current geographical position of the vehicle; computer means for computing digitalized data of the geographical vehicle position; memory means for continuously storing the digitalized geographical vehicle position data on a data carrier, which is protected against overwriting of recorded data, the memory means additionally storing time data for identifying a particular point in time at which an individual geographical vehicle position is determined, the data carrier being exchangeably mounted in the memory means; data reading means for inputting data which identify a vehicle operator and are recorded on the data carrier; and additional input means for inputting data identifying the operator.