Redundant array of control devices

An array of control devices having a plurality of control devices (--) which are interconnected via a first data bus, in a means of transportation, control devices (--) which are of redundant configuration with respect to a control function being provided, and in each case a data bus isolating switch being assigned to the control devices (--) which are of redundant configuration, the data bus isolating switch(s) connecting or disconnecting the data bus as a function of an evaluation signal. In order to optimize the redundant array, each of these data bus isolating switches is connected to a signal line of at least one further redundant control device (--), a further redundant control device transmits an evaluation signal to the data bus isolating switch which is assigned to a first redundant control device.