VEHICLE SYSTEM

A safety standard of a predetermined level is set for a function to be implemented in each of devices. A central ECU includes ASIL ECUs to, in which each of the ASIL ECUS to is allocated for each level of the safety standard and is able to execute, on the device, confirmation processing according to the allocated level. A network branch unit distributes and transmits each of input signals from the devices, the input signals being respectively transmitted from zone ECUs, to a corresponding one of the ASIL ECUS each having the level allocated thereto and corresponding to the function of the device, and distributes and transmits each of output signals from the ASIL ECUs, the output signals being respectively transmitted from the ASIL ECUs, to a corresponding one of the zone ECUs each having transmitted the input signal from the device subjected to the confirmation processing.