Abstract: An electrical/electronic system architecture for a vehicle includes a plurality of regions partitioning the vehicle, with each region having a regional electrical/electronic controller (REEC) and at least one local network partitioning each region, with each local network having an electrical/electronic device. The electrical/electronic system architecture includes a global power distribution network that distributes power from a power source to the REEC within each region and a regional power distribution system that distributes the power from the REEC to the local network. The electrical/electronic system architecture also includes a global communication network that provides serial data communication between the REECs in the regions and a regional communication network communicating with the global communication network, such that the regional communication network provides data communication between the REEC and the local network within the region.