ISO/TR 21707:2008规定了一套标准术语，用于定义ITS领域中数据供应商和数据消费者之间交换的数据质量。这适用于交通和旅行信息服务以及交通管理和控制系统，特别是在系统之间存在开放接口的情况下。当然，它可能适用于其他类型的接口，包括内部接口，但本技术报告仅针对系统之间的开放接口。 ISO/TR 21707:2008确定了一组参数或元- 诸如准确度、准确性和及时性等数据，这些数据可以给出所交换数据的质量和接口上的整体服务的度量。数据质量适用于任何数据供应商和数据消费者之间的接口，但对开放接口至关重要。它包括整个服务的质量或供应或发布系统可以提供的服务的任何组成部分。例如，这可以提供数据服务的可用性和可靠性的度量，包括正常运行时间与停机时间以及服务的响应性，或者可以提供发布数据中各个属性的精度和准确性的度量。 应注意的是，在ISO/TR 21707:2008的背景下，数据可以被视为最初收集的原始数据，也可以作为处理后的数据，两者都可以通过接口提供给数据消费者。数据消费者可以是提供数据的组织的内部或外部。此外，数据可以从实时数据（例如实时交通事件数据、交通测量数据或实时摄像机图像）导出，或者可以是已经导出和验证的静态数据- 线路（例如定义网络的位置表）。在所有这些情况下，数据质量的测量都很重要。 ISO/TR 21707:2008适用于交通和旅行信息服务领域以及交通管理和控制系统领域的所有开放ITS接口。

ISO/TR 21707:2008 specifies a set of standard terminology for defining the quality of data being exchanged between data suppliers and data consumers in the ITS domain. This applies to Traffic and Travel Information Services and Traffic Management and Control Systems, specifically where open interfaces exist between systems. It may of course be applicable for other types of interfaces, including internal interfaces, but this Technical Report is aimed solely at open interfaces between systems. ISO/TR 21707:2008 identifies a set of parameters or meta-data such as accuracy, precision and timeliness etc. which can give a measure of the quality of the data exchanged and the overall service on an interface. Data quality is applicable to interfaces between any data supplier and data consumer, but is vitally important on open interfaces. It includes the quality of the service as a whole or any component part of the service that a supplying or publishing system can provide. For instance this may give a measure of the availability and reliability of the data service in terms of uptime against downtime and the responsiveness of the service or it may give a measure of the precision and accuracy of individual attributes in the published data. It should be noted that in the context of ISO/TR 21707:2008 data may be taken to be either raw data as initially collected, or as processed data, both of which may be made available via an interface to data consumers. The data consumer may be internal or external to the organisation which is making the data available. Additionally the data may be derived from real time data (e.g. live traffic event data, traffic measurement data or live camera images) or may be static data which has been derived and validated off-line (e.g. a location table defining a network). Measurements of data quality are of importance in all such cases. ISO/TR 21707:2008 is suitable for application to all open ITS interfaces in the Traffic and Travel Information Services domain and the Traffic Management and Control Systems domain.