UNE-CEN ISO/TS 19091:2017

This document defines the message, data structures, and data elements to support exchangesbetween the roadside equipment and vehicles to address applications to improve safety, mobility andenvironmental efficiency. In order to verify that the defined messages will satisfy these applications,a systems engineering process has been employed that traces use cases to requirements andrequirements to messages and data concepts.This document consists of a single document that contains the base specification and a series ofannexes. The base specification lists the derived information requirements (labelled informative) andreferences to other standards for message definitions where available. Annex A contains descriptionsof the use cases addressed by this document. Annex B and Annex C contain traceability matrices thatrelate use cases to requirements and requirements to the message definitions (i.e. data frames anddata elements). The next annexes list the base message requirements and application-oriented specificrequirements (requirements traceability matrix) that map to the message and data concepts to beimplemented. As such, an implementation consists of the base plus an additional group of extensionswithin this document.Details on information requirements, for other than SPaT, MAP, SSM, and SRM messages are providedin other International Standards. The focus of this document is to specify the details of the SPaT, MAP,SSM, and SRM supporting the use cases defined in this document. Adoption of these messages varies byregion and their adoption may occur over a significant time period.This document covers the interface between roadside equipment and vehicles. Applications, theirinternal algorithms, and the logical distribution of application functionality over any specific systemarchitecture are outside the scope of this document.