ISO 15784-3:2008 defines an application profile referring ISO 14827 and other base standards.

The application profile it specifies is used to exchange data and messages

• between a traffic management centre and roadside modules for traffic management, and
• between roadside modules used for traffic management.

The scope of ISO 15784-3:2008 does not include the communication between roadside modules and in-vehicle units, in-vehicle communication, in-cabinet communication or motion video transmission from a camera or recorded media.