Railway information transmission method and system

In a railway information transmission system wherein information transmission between an on-vehicle control equipment for a train running on a track and a ground control equipment for administering the run of the train is performed by a consecutive transmission mode through a plurality of ground transmitters/receivers which are coupled with the ground control equipment by a network;

• a railway information transmission system characterized in that each of the ground control equipment and the on-vehicle control equipment includes therein redundant-code generation means for generating a redundant code which is updated in accordance with a predetermined procedure, and that the transmission side is furnished with means for affixing the redundant code which is updated each time information is transmitted from said redundant-code generation means, to communication information so as to form transmission information, while the reception side is furnished with means for updating the redundant code of said redundant-code generation means on said reception side each time the transmission information is received, and also with means for collating said redundant code affixed to said transmission information and said redundant code updated by said reception side itself.