PD ISO/TR 21707:2008 PDF

1   Scope This Technical Report 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. This Technical Report identifies a set of parameters or meta-data such as accuracy, precision and timeliness, 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. In the majority of ITS applications, data is routinely exchanged between disparate systems. Where this data is being exchanged on a closed circuit between known senders and recipients, the parties concerned need to understand the quality of the data being exchanged and any resultant restrictions on its subsequent use by the recipient. In most cases, this is dealt with on a case-by-case basis and all parties to the agreement to exchange data will understand the quality parameters and restrictions. However, transpo...