ISO 11898-2 specifies the of the Controller Area Network (CAN). It defines how electrical signals are transmitted across the physical wires (usually a twisted pair) to ensure reliable communication between Electronic Control Units (ECUs) in vehicles and industrial machinery. Evolution of the Standard

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If you are searching for the ISO 11898-2 PDF download for quick technical reference, here are the core specifications defined in the document:

: The original baseline for high-speed CAN, supporting bit rates up to 1 Mbps.

The standard has evolved to keep pace with increasing automotive data demands: