This part of ISO/IEC 16500 describes an Abstract System Reference Model (ASRM) at the highest level first and

then creates a specific instance of this abstract model to define the DAVIC System Reference Model (DSRM).

The ASRM and DSRM are not intended to indicate preferred implementations of the DAVIC System; but are to

be used as a tool to guide the definition of DAVIC specifications. Additionally, as DAVIC specifications are

issued, the reference models can be used to aid the development and implementation of DAVIC-compliant

systems and products.