This part of ISO 1 7458 specifies the FlexRay communication protocol which is specified for a dependable automotive network. Some of the basic characteristics of the FlexRay protocol are synchronous and asynchronous frame transfer, guaranteed frame latency and jitter during synchronous transfer, prioritization of frames during asynchronous transfer, single or multi-master clock synchronisation 1 ) time synchronisation across multiple networks, error detection and signalling, and scalable fault tolerance 2) .
