PD CEN ISO/TS 19321:2020

What is ISO/TS 19321 about?  

In Cooperative Intelligent Transport Systems (C-ITS), presenting information related to the traffic situation or regulation of a road to the driver of a vehicle is an important component of road operations. Road operators, together with equipment manufacturers, whether of vehicles or of roadside equipment, contribute to how road information is properly presented to drivers. 

ISO/TS 19321 specifies the in-vehicle information (IVI) data structures that are required by different intelligent transport system (ITS) services for exchanging information between ITS Stations (ITS-S). Usage of the IVI information elements depends on the specific context and application of IVI for a specific service. The IVI Structure is intended to be profiled to fulfil the requirements of a specific service. 

The data structures are specified as communications agnostic. ISO/TS 19321 provides scenarios for usage of the data structure, e.g., in case of real time, short-range communications. 

NOTE: ISO/TS 19321 does not provide the communication protocols. 

Who is ISO/TS 19321 for? 

ISO/TS 19321  on cooperative intelligent transport system is useful for: 

• Road operators 
• Manufacturers of vehicles and roadside equipment 
• ITS service providers 
• Organizations involved in transport operations 

Why should you use ISO/TS 19321?  

The Cooperative Intelligent Transport Systems method is used for notifying road users of road and traffic situations and events is by transmission of messages such as Cooperative Awareness Messages (CAM), Decentralized Environment Notification Messages (DENM), or Basic Safety Messages (BSM). 

ISO/TS 19321 supports with information about mandatory and advisory road signage such as contextual speeds, road works warnings, vehicle restrictions, lane restrictions, road hazard warnings, location-based services, re-routing. In-vehicle information can be sent by an ITS Station (ITS-S) and either corresponds to physical road signs such as static or variable road signs or does not correspond to physical road signs or corresponds to road works.  

ISO/TS 19321 provides  you with a toolbox of information elements for In-vehicle information. It can be used to fulfil the requirements of the service provider considering the needs of receiving ITS-S.  

The container concept included in ISO/TS 19321 provides you ITS-S guidance which enable you to manage the relevant In- vehicle information, determine where the In-vehicle information is relevant, and to provide details for the application of In-vehicle information.  

What’s changed since the last update? 

PD CEN ISO/TS 19321:2020 supersedes ISO/TS 19321:2015, which is withdrawn. PD CEN ISO/TS 19321:2020 includes some technical changes with respect to ISO/TS 19321:2015. These include: 

• The Scope has been edited 
• Several containers have been renamed or newly introduced and an "Automated Vehicle Container" has been added to better manage automated vehicles 
• The abstract syntax notation one (ASN.1) code in Annex A has been captured separately. This edition is backwards compatible with the previous edition in that it adds information elements to the IVI Structure by using ASN.1 extensions. The ASN.1 extension feature ensures that implementations of the previous edition can correctly parse IVI Structures compliant with this edition and process the information specified in the previous edition without needing knowledge about the extensions 
• The former Annex B has been replaced with new visual examples 
• C-Roads and Eco-AT documents have been added to the Bibliography