智能交通系统（ITS）参考体系结构是描述ITS如何提供一个或多个ITS服务的工具。它包括向利益相关者提供服务所需的主要元素及其相互关联的高级描述。它提供了一个框架，可以在其标准中标准化接口、规范和详细设计。 相比之下，它的标准往往侧重于设计细节。虽然这些标准的开发可能是由单个用户根据其需求发起的，但它们通常（并且正确地）以通用格式编写，允许在广泛的环境中应用。然而，这对读者理解标准的最初目的以及该标准是否适用于其他环境提出了挑战。 本文档定义了标准的文档规则，这些标准定义了ITS参考体系结构的系统元素之间的接口。 这包括: a） 记录其参考体系结构方面的要求； b） 记录或引用其参考体系结构方面时使用的术语。 在编写本文件时，作者假设使用了当代系统工程实践。本文件中未定义此类做法。

An intelligent transport system (ITS) reference architecture is a tool that describes how an ITS delivers one or more ITS services. It includes a high-level description of the major elements and the interconnections among them that are needed for the service(s) to be provided to stakeholders. It provides the framework around which the interfaces, specifications, and detailed ITS designs can be standardized within ITS standards. By contrast, ITS standards are often focused on design details. While the development of these standards may be initiated by a single ITS user need, they are often (and properly) written in a generic format that allows for application in a broad array of contexts. However, this can present a challenge to the reader in understanding the original purpose of a standard and whether the standard is intended for other environments. This document defines documentation rules for standards that define interfaces between or among system elements of an ITS reference architecture. This includes: a) requirements for documenting aspects of the ITS reference architecture; b) terminology to be used when documenting or referencing aspects of the ITS reference architecture. In compiling this document, the authors have assumed that contemporary systems engineering practices are used. Such practices are not defined within this document.