The Controller Area Network (CAN bus) is the “automotive nervous system” that enables communication among various nodes in automobiles. In other words – these nodes, or ECUs are like parts of the body, interconnected via the CAN bus. Information sensed by one part can seamless be shared with another part. CAN FD is essentially a CAN bus with flexible data rate and an extension of the classical CAN data link layer. In comparison with classical CAN protocol, CAN FD increases the payload from 8 to 64 bytes. It also allows a higher data bit rate, depending on the CAN transceiver.