ISO 11898-1:2015 specifies the data link layer (DLL) and physical signalling of the controller area network (CAN) [REF].
ISO 11898-3:2006 specifies low-speed, fault-tolerant, medium-dependent interface for setting up an interchange of digital information between electronic control units of road vehicles equipped with the CAN at transmission rates above 40 kBit/s up to 125 kBit/s.