J1939 Safety is an extension to the J1939 protocol. It is defined in SAE J1939-76 and provides methods to transmit and receive safety-critical data. The safety-critical data transmission can be on parallel to an existing J1939 transmission.

The J1939 Safety Extension is an extension for our J1939 stack and it provides methods to send and receive J1939 Safety Header messages and to ensure data consistency within a J1939 Safety Data Group.

To analyze J1939 Safety messages we recommend our J1939 interpretation plugin for the CANinterpreter or CANopen DeviceExplorer.