Abstract: A method for automatic vehicle guidance is provided, in which infrastructure data is wirelessly transmitted to the vehicle and vehicle guidance commands are calculated on the basis of the infrastructure data. In this method, the infrastructure data for at least a section of the travel route immediately ahead is loaded into an on-board memory, the current position of the vehicle is continuously determined using a precise position system, and the commands are calculated on the basis of the position data and the stored infrastructure data.

Abstract: The invention relates to an automatic vehicle guidance method according to which infrastructure data are wirelessly transmitted to the vehicle (10) and vehicle guidance instructions are calculated by using this infrastructure data. The method is characterized in that the infrastructure data for at least one segment of the route (40) located immediately ahead is loaded into an on-board memory (44), in that the actual position of the vehicle (10) is continuously determined by a precise positioning system (14), and in that the instructions are calculated by using the position data and the stored infrastructure data.

Abstract: A method of message transmission between users in a distributed system with token passing includes a special token procedure in order to achieve consistent message transmission, even in the case of a fault. The special token procedure is based on a coincidence of monitoring and information states of the users. In the case of an error, a logical resumption, which is derived from a consecutive sequence number, is carried out without adversely affecting data consistency. The method can be implemented in different versions, that is with information passing of user data in the form of a ring or the transmission of user data in physical multicast and the passing of associated check information in the form of a ring. The method can be used in supervisory control installations.