scope:

This standard is applicable to transportation devices and management systems that must operate in Intelligent Transportation Systems. It specifies a set of procedures applicable to the transport and network layers of the ISO - OSI Reference Model. The set of procedures provides a linking mechanism between the application and subnetwork profiles in non-networked environments. In this environment, no transport and network layer services are needed other than interfacing the profiles and upper layer protocol multiplexing. It is intended to provide a standard interface technique to ensure interoperability, especially in cases where multiple communications stacks co-exist.