本文件描述了城市智能交通系统（ITS）服务应用中数字基础设施服务的基本角色和功能模型。它扩展了ISO/TR 4445中给出的信息。它展示了一个范例，描述: a） 为合作ITS服务应用提供数字基础设施的框架； b） 描述此类服务的角色概念和功能模型； c） 参与提供/接收数字基础设施服务的参与者之间的概念架构； d） 架构所基于的关键文件的参考文件； 和 e） 通用程序组织的分类法。

This document describes a basic role and functional model of digital infrastructure service for urban intelligent transport system (ITS) service applications. It provides an extension of the information given in ISO/TR 4445. It lays out a paradigm describing: a) a framework for the provision of digital infrastructure for cooperative ITS service application; b) a description of the concept of roles and functional models for such services; c) a conceptual architecture between actors involved in the provision/receipt of digital infrastructure services; d) references for the key documents on which the architecture is based; and e) a taxonomy of the organization of generic procedures.