scope:

This International Standard provides a description of the primary services that have been internationally defined to promote consistency among implementations; implementations can provide any of these services in combination with any other services that are appropriate. This document organizes ITS services by defining service groups, which are placed into one of several service domains. Each service group contains one or more individual services, each of which is described.

This International Standard is intended for use by at least two groups of people involved in the ITS sector. The first group is those looking for ideas about the services that ITS implementations can provide and the second is those who are developing standards.

For the first group, this International Standard provides service descriptions that can act as the catalyst for more detailed descriptions. The level of detail can differ from one ITS implementation to another, depending on whether or not a national ITS architecture is involved, and whether this architecture is based directly on services, or on groups of functions. The service descriptions in this standard are pitched at a high-level as too much detail can be prescriptive and reduces flexibility.

For standards developers, this International Standard is applicable to the working groups of ISO TC204 and other Technical Committees who are developing standards for the ITS sector. This International Standard is designed to provide information and explanation of services that can form the basis and reason for developing standards.

Due to its nature, this document is largely advisory and informative with minimal requirements. It is designed to assist the integration of services into a cohesive reference architecture, thereby promoting interoperability and the use of common data definitions. Specifically, services defined within the service groups can be the basis for definition of 'use cases', 'user needs' or "user service requirements' depending on the methodology being used to develop the resultant ITS architecture functionality, along with definition of applicable data within data dictionaries, as well as applicable communications and data exchange standards.