This International Standard specifies the application layer core which provides communication tools for applications based on DSRC. These tools consist of kernels that can be used by application processes via service primitives. The application processes, including application data and application-specific functions, are outside the scope of this International Standard.

This International Standard is named “application layer”, although it does not cover all functionality of OSI Layer 7 and it includes functionality from lower layers.

It uses services provided by DSRC data link layer, and covers functionality of intermediate layers of the “OSI Basic Reference Model” (ISO/IEC 7498‑1).

Figure 2 illustrates the global data flow between the parts of the DSRC stack (physical, data link and application layers) and the application.

The following subjects are covered by this International Standard:

It is outside the scope of this International Standard to define a security policy. Some transport mechanisms for security-related data are provided.