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The railway vehicles are continuously supplied with travel instructions with time-division multiplexing from a route control centre (SZ). These instructions are to be acknowledged in each case by the vehicles (FG). If a certain vehicle has to come to an emergency stop due to an extraordinary event, an emergency stop instruction is triggered by the route control centre (SZ), which instruction has priority over normal travel instructions and is therefore transmitted immediately without phasing into the time-division multiplexing operation. If an emergency stop instruction of this kind is not acknowledged within a predetermined time, a complete interruption in the emission of travel instructions takes place, as a result of which all the vehicles are made to execute an emergency train stop.