International Organization for Standardization

Intelligent transport systems - Cooperative systems - Data exchange specification for in-vehicle presentation of external road and traffic related data - First Edition
 N TS 17425

Annotation

This Technical Specification specifies the In-Vehicle Signage service and application that delivers In- Vehicle Signage information to ITS stations (vehicle ITS stations or personal ITS stations devices) concerning road and traffic conditions, qualified by road authorities/operators, in a consistent way with road authority’s/operator’s requirements, in the manner that is coherent with the information that would be displayed on a road sign or variable message sign (VMS).

NOTE A Variable Message Sign is also named dynamic message sign. Both terms are considered as synonyms and can be used interchangeably. In the text below, only variable message sign and its abbreviated term VMS are used.

This Technical Specification defines the following:

— the In-Vehicle Signage service and the In-Vehicle Signage application that instantiates this ITS service;

— the requirements to be fulfilled by the In-Vehicle Signage service;

— the requirements for using functions provided by the ITS station facilities layer supporting the use of the In-Vehicle Signage service;

— the ITS-S application processes in the different ITS station, that instantiate the In-Vehicle Signage ITS service.

This Technical Specification also specifies: the sets of communication requirements and objectives (profiles) using the methods defined in ISO/TS 17423 to select the level of performance (best effort or real-time, etc.), confidence and security (authentication, encryption, etc.) for each communication flow between ITS stations in the scope of the In-Vehicle Signage service.