Intelligent transport systems -- Cooperative ITS -- Dictionary of in-vehicle information (IVI) data structures

This document 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). A general, extensible data structure is specified, which is split into structures called containers to accommodate current-day information. Transmitted information includes IVI such as contextual speed, road works warnings, vehicle restrictions, lane restrictions, road hazard warnings, location-based services, re-routing. The information in the containers is organized in sub-structures called data frames and data elements, which are described in terms of its content and its syntax. The data structures are specified as communications agnostic. This document does not provide the communication protocols. This document provides scenarios for usage of the data structure, e.g. in case of real time, short-range communications.

Systèmes intelligents de transport -- Coopérative STI -- Dictionnaire de structures de données d'informations dans les véhicules (IVI)

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TECHNICAL ISO/TS
SPECIFICATION 19321
Second edition
2020-09
Intelligent transport systems —
Cooperative ITS — Dictionary of
in-vehicle information (IVI) data
structures
Systèmes intelligents de transport — Coopérative STI — Dictionnaire
de structures de données d'informations dans les véhicules (IVI)
Reference number
ISO/TS 19321:2020(E)
ISO 2020
---------------------- Page: 1 ----------------------
ISO/TS 19321:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/TS 19321:2020(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction ..............................................................................................................................................................................................................................vii

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Abbreviated terms .............................................................................................................................................................................................. 3

5 In-vehicle information data structure ........................................................................................................................................... 4

5.1 Structural model .................................................................................................................................................................................... 4

5.1.1 General model .................................................................................................................................................................... 4

5.1.2 Conceptual zones ............................................................................................................................................................. 5

5.2 Location referencing .......................................................................................................................................................................... 7

5.2.1 General...................................................................................................................................................................................... 7

5.2.2 Geographic positioning .............................................................................................................................................. 7

5.2.3 Map-based location referencing ......................................................................................................................... 8

6 IVI Containers .......................................................................................................................................................................................................... 8

6.1 IVI Management Container .......................................................................................................................................................... 8

6.1.1 Definition ................................................................................................................................................................................ 8

6.1.2 Usage — IVI Management Container ............................................................................................................. 9

6.2 IVI Location Containers ................................................................................................................................................................10

6.2.1 General...................................................................................................................................................................................10

6.2.2 Geographic Location Container (GLC) .................. ......................................................................................11

6.2.3 Map Location Container (MLC) ........................................................................................................................12

6.3 IVI Application Containers .........................................................................................................................................................13

6.3.1 General...................................................................................................................................................................................13

6.3.2 General IVI Container ...............................................................................................................................................13

6.3.3 Road Configuration Container...........................................................................................................................15

6.3.4 Text Container .................................................................................................................................................................16

6.3.5 Layout Container ..........................................................................................................................................................18

6.3.6 Automated Vehicle Container ............................................................................................................................19

6.3.7 Road Surface Container ...........................................................................................................................................20

7 Description of data frames and data elements ..................................................................................................................21

7.1 General ........................................................................................................................................................................................................21

7.2 Data Frames ............................................................................................................................................................................................21

7.2.1 AbsolutePosition ...........................................................................................................................................................21

7.2.2 AbsolutePositionWAltitude .................................................................................................................................21

7.2.3 AnyCatalogue ...................................................................................................................................................................21

7.2.4 AutomatedVehicleRule.............................................................................................................................................22

7.2.5 CompleteVehicleCharacteristics ......................................................................................................................22

7.2.6 ComputedSegment ......................................................................................................................................................23

7.2.7 DeltaPosition ....................................................................................................................................................................23

7.2.8 ISO14823Attribute ......................................................................................................................................................23

7.2.9 ISO14823Code ................................................................................................................................................................23

7.2.10 LaneInformation ...........................................................................................................................................................24

7.2.11 LaneCharacteristics ....................................................................................................................................................24

7.2.12 LayoutComponent .......................................................................................................................................................25

7.2.13 LoadType .............................................................................................................................................................................25

7.2.14 MapReference ..................................................................................................................................................................25

7.2.15 PlatooningRule ...............................................................................................................................................................25

7.2.16 PolygonalLine ..................................................................................................................................................................26

7.2.17 RoadSurfaceDynamicCharacteristics ..........................................................................................................27

7.2.18 RoadSurfaceStaticCharacteristics ..................................................................................................................27

7.2.19 RSCode ...................................................................................................................................................................................27

© ISO 2020 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/TS 19321:2020(E)

7.2.20 Segment ................................................................................................................................................................................27

7.2.21 Text ...........................................................................................................................................................................................28

7.2.22 TractorCharacteristics..............................................................................................................................................28

7.2.23 TrailerCharacteristics ...............................................................................................................................................28

7.2.24 TrainCharacteristics ...................................................................................................................................................28

7.2.25 VcCode ....................................................................................................................................................................................28

7.2.26 VehicleCharacteristicsFixValues ......................................................................................................................29

7.2.27 VehicleCharacteristicsRanges ............................................................................................................................29

7.2.28 Zone ........................................................................................................................................... ...............................................30

7.2.29 Data frames which are lists ..................................................................................................................................30

7.3 Data Elements .......................................................................................................................................................................................31

7.3.1 BankingAngle ...................................................................................................................................................................31

7.3.2 ComparisonOperator ................................................................................................................................................31

7.3.3 Condition .............................................................................................................................................................................31

7.3.4 DefinitionAccuracy ........................................................................................................................................... ...........32

7.3.5 Depth .......................................................................................................................................................................................32

7.3.6 Direction...............................................................................................................................................................................32

7.3.7 DriverCharacteristics ................................................................................................................................................32

7.3.8 FrictionCoefficient .......................................................................................................................................................33

7.3.9 GapBetweenVehicles .................................................................................................................................................33

7.3.10 GoodsType ..........................................................................................................................................................................33

7.3.11 IviIdentificationNumber ........................................................................................................................................33

7.3.12 IviLaneWidth....................................................................................................................................................................33

7.3.13 IviPurpose...........................................................................................................................................................................34

7.3.14 IviStatus ................................................................................................................................................................................34

7.3.15 IviType ...................................................................................................................................................................................34

7.3.16 LaneDelimitation ..........................................................................................................................................................34

7.3.17 LaneId .....................................................................................................................................................................................35

7.3.18 LaneMarkingStatus .....................................................................................................................................................35

7.3.19 LaneStatus ..........................................................................................................................................................................35

7.3.20 LaneType .............................................................................................................................................................................35

7.3.21 MarkingColour ................................................................................................................................................................36

7.3.22 MaterialType ....................................................................................................................................................................37

7.3.23 MaxLenghtOfPlatoon .................................................................................................................................................37

7.3.24 MaxNoOfVehicles ..........................................................................................................................................................37

7.3.25 PriorityLevel .....................................................................................................................................................................37

7.3.26 Provider ................................................................................................................................................................................37

7.3.27 RSCUnit .................................................................................................................................................................................37

7.3.28 SaeAutomationLevel ..................................................................................................................................................38

7.3.29 Temperature .....................................................................................................................................................................38

7.3.30 TreatmentType ...............................................................................................................................................................38

7.3.31 VcClass ...................................................................................................................................................................................38

7.3.32 VcOption ...............................................................................................................................................................................38

7.3.33 WearLevel ...........................................................................................................................................................................39

7.3.34 Zid ..............................................................................................................................................................................................39

Annex A (normative) ASN.1 modules ................................................................................................................................................................40

Annex B (informative) Visual examples of location container ...............................................................................................41

Bibliography .............................................................................................................................................................................................................................48

iv © ISO 2020 – All rights reserved
---------------------- Page: 4 ----------------------
ISO/TS 19321:2020(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: www .iso .org/ iso/ foreword .html.

This document was prepared by the European Committee for Standardization (CEN) Technical

Committee CEN/TC 278, Intelligent transport systems (ITS), in collaboration with Technical Committee

ISO/TC 204, Intelligent transport systems, in accordance with the Agreement on technical cooperation

between ISO and CEN (Vienna Agreement).

This second edition cancels and replaces the first edition (ISO/TS 19321:2015) which has been

technically revised.
The main changes compared to the previous edition are as follows.
— 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 (e.g. data

elements and data frames) 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.

— Data types are imported from ISO 14823 which are backwards compatible with the first edition of

this document.

— Data types are imported from updated editions of ISO 14906, ISO 17419 and ETSI/TS 102 894-2,

which are backwards compatible with the first edition of this document.
© ISO 2020 – All rights reserved v
---------------------- Page: 5 ----------------------
ISO/TS 19321:2020(E)

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
vi © ISO 2020 – All rights reserved
---------------------- Page: 6 ----------------------
ISO/TS 19321:2020(E)
Introduction

In a Cooperative Intelligent Transport System (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.

The road operators are responsible for road setup, operation, signage, and maintenance for traffic

management and road safety, and in some countries, also for the enforcement of road laws. For road

operators, efficient transport of vehicles on roadways ensures a safe and predictable trip for all road

users. Road operators, together with equipment manufacturers, whether of vehicles or of roadside

equipment, contribute to how road information is properly presented to drivers.

So far, one defined C-ITS method for notifying road users of road and/or 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).

This document supports mandatory and advisory road signage such as contextual speeds and road

works warnings. 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 (a

virtual sign) or corresponds to road works. In-vehicle information (IVI) does not include identification

of road events as already provided by DENM.

This document provides a toolbox of information elements for IVI. It can be used to fulfil the

requirements of the service provider considering the needs of receiving ITS-S. The container concept

provides a way for an ITS-S to manage the relevant IVI information, determine where the IVI is relevant,

and to provide details for the application of IVI. The description of data elements encompasses the data

syntax and semantics, i.e. a definition of data format and content, together with a description of how to

use those data elements.

This document is of an enabling nature. It does not specify which information is necessary for a certain

service, but it supports those IVI information elements that can be necessary to be transmitted to a

receiving ITS-S to carry out a certain service. Usage of the IVI information elements depends on the

specific context and application of IVI for a specific service and usage is established as mandatory or

optional only for messaging purposes, not for application purposes. The IVI Structure is intended to be

profiled to fulfil the requirements of a specific service.

This document refers to ISO 14823 as one system of standardized codes for existing road signs codes.

NOTE ISO 14823 does not contain codes for specific national or regional signs that are not commonly used,

and it does not represent a catalogue of road sign pictograms for all applicable nations.

© ISO 2020 – All rights reserved vii
---------------------- Page: 7 ----------------------
TECHNICAL SPECIFICATION ISO/TS 19321:2020(E)
Intelligent transport systems — Cooperative ITS —
Dictionary of in-vehicle information (IVI) data structures
1 Scope

This document 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).

A general, extensible data structure is specified, which is split into structures called containers to

accommodate current-day information. Transmitted information includes IVI such as contextual

speed, road works warnings, vehicle restrictions, lane restrictions, road hazard warnings, location-

based services, re-routing. The information in the containers is organized in sub-structures called data

frames and data elements, which are described in terms of its content and its syntax.

The data structures are specified as communications agnostic. This document does not provide the

communication protocols. This document provides scenarios for usage of the data structure, e.g. in case

of real time, short-range communications.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 639-1:2002, Codes for the representation of names of languages — Part 1: Alpha-2 code

ISO 14823:2017, Intelligent transport systems — Graphic data dictionary

ISO 14906:2018, Electronic fee collection — Application interface definition for dedicated short-range

communication

ISO/TS 19091:2019, Intelligent transport systems — Cooperative ITS — Using V2I and I2V communications

for applications related to signalized intersections

ISO 24534-3:2016, Intelligent transport systems — Automatic vehicle and equipment identification —

Electronic registration identification (ERI) for vehicles — Part 3: Vehicle data

ETSI/TS 102 894-2 V1.3.1 (2018-08), Intelligent Transport Systems (ITS); Users and applications

requirements; Part 2: Applications and facilities layer common data dictionary
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
application data unit
data unit exchanged between ITS Station applications
© ISO 2020 – All rights reserved 1
---------------------- Page: 8 ----------------------
ISO/TS 19321:2020(E)
3.2
container

group of data frames (3.4) and data elements (3.3) semantically belonging together in one place in the

in-vehicle information (3.8) structure
3.3
data element
data type that contains one single data
[SOURCE: ETSI/TS 102 894-2 V1.3.1]
3.4
data f
...

TECHNICAL ISO/TS
SPECIFICATION 19321
Second edition
Intelligent transport systems —
Cooperative ITS — Dictionary of
in-vehicle information (IVI) data
structures
Systèmes intelligents de transport — Coopérative STI — Dictionnaire
de structures de données d'informations dans les véhicules (IVI)
PROOF/ÉPREUVE
Reference number
ISO/TS 19321:2020(E)
ISO 2020
---------------------- Page: 1 ----------------------
ISO/TS 19321:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii PROOF/ÉPREUVE © ISO 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/TS 19321:2020(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction ................................................................................................................................................................................................................................vi

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Abbreviated terms .............................................................................................................................................................................................. 3

5 In-vehicle information data structure ........................................................................................................................................... 4

5.1 Structural model .................................................................................................................................................................................... 4

5.1.1 General model .................................................................................................................................................................... 4

5.1.2 Conceptual zones ............................................................................................................................................................. 5

5.2 Location referencing .......................................................................................................................................................................... 7

5.2.1 General...................................................................................................................................................................................... 7

5.2.2 Geographic positioning .............................................................................................................................................. 7

5.2.3 Map-based location referencing ......................................................................................................................... 8

6 IVI Containers .......................................................................................................................................................................................................... 8

6.1 IVI Management Container .......................................................................................................................................................... 8

6.1.1 Definition ................................................................................................................................................................................ 8

6.1.2 Usage — IVI Management Container ............................................................................................................. 9

6.2 IVI Location Containers ................................................................................................................................................................10

6.2.1 General...................................................................................................................................................................................10

6.2.2 Geographic Location Container (GLC) .................. ......................................................................................11

6.2.3 Map Location Container (MLC) ........................................................................................................................12

6.3 IVI Application Containers .........................................................................................................................................................13

6.3.1 General...................................................................................................................................................................................13

6.3.2 General IVI Container ...............................................................................................................................................13

6.3.3 Road Configuration Container...........................................................................................................................15

6.3.4 Text Container .................................................................................................................................................................16

6.3.5 Layout Container ..........................................................................................................................................................18

6.3.6 Automated Vehicle Container ............................................................................................................................19

6.3.7 Road Surface Container ...........................................................................................................................................20

7 Description of data frames and data elements ..................................................................................................................21

7.1 General ........................................................................................................................................................................................................21

7.2 Data Frames ............................................................................................................................................................................................21

7.2.1 AbsolutePosition ...........................................................................................................................................................21

7.2.2 AbsolutePositionWAltitude .................................................................................................................................21

7.2.3 AnyCatalogue ...................................................................................................................................................................21

7.2.4 AutomatedVehicleRule.............................................................................................................................................22

7.2.5 CompleteVehicleCharacteristics ......................................................................................................................22

7.2.6 ComputedSegment ......................................................................................................................................................23

7.2.7 DeltaPosition ....................................................................................................................................................................23

7.2.8 ISO14823Attribute ......................................................................................................................................................23

7.2.9 ISO14823Code ................................................................................................................................................................23

7.2.10 LaneInformation ...........................................................................................................................................................24

7.2.11 LaneCharacteristics ....................................................................................................................................................24

7.2.12 LayoutComponent .......................................................................................................................................................25

7.2.13 LoadType .............................................................................................................................................................................25

7.2.14 MapReference ..................................................................................................................................................................25

7.2.15 PlatooningRule ...............................................................................................................................................................25

7.2.16 PolygonalLine ..................................................................................................................................................................26

7.2.17 RoadSurfaceDynamicCharacteristics ..........................................................................................................27

7.2.18 RoadSurfaceStaticCharacteristics ..................................................................................................................27

7.2.19 RSCode ...................................................................................................................................................................................27

© ISO 2020 – All rights reserved PROOF/ÉPREUVE iii
---------------------- Page: 3 ----------------------
ISO/TS 19321:2020(E)

7.2.20 Segment ................................................................................................................................................................................27

7.2.21 Text ...........................................................................................................................................................................................28

7.2.22 TractorCharacteristics..............................................................................................................................................28

7.2.23 TrailerCharacteristics ...............................................................................................................................................28

7.2.24 TrainCharacteristics ...................................................................................................................................................28

7.2.25 VcCode ....................................................................................................................................................................................28

7.2.26 VehicleCharacteristicsFixValues ......................................................................................................................29

7.2.27 VehicleCharacteristicsRanges ............................................................................................................................29

7.2.28 Zone ........................................................................................................................................... ...............................................30

7.2.29 Data frames which are lists ..................................................................................................................................30

7.3 Data Elements .......................................................................................................................................................................................31

7.3.1 BankingAngle ...................................................................................................................................................................31

7.3.2 ComparisonOperator ................................................................................................................................................31

7.3.3 Condition .............................................................................................................................................................................31

7.3.4 DefinitionAccuracy ........................................................................................................................................... ...........32

7.3.5 Depth .......................................................................................................................................................................................32

7.3.6 Direction...............................................................................................................................................................................32

7.3.7 DriverCharacteristics ................................................................................................................................................32

7.3.8 FrictionCoefficient .......................................................................................................................................................33

7.3.9 GapBetweenVehicles .................................................................................................................................................33

7.3.10 GoodsType ..........................................................................................................................................................................33

7.3.11 IviIdentificationNumber ........................................................................................................................................33

7.3.12 IviLaneWidth....................................................................................................................................................................33

7.3.13 IviPurpose...........................................................................................................................................................................34

7.3.14 IviStatus ................................................................................................................................................................................34

7.3.15 IviType ...................................................................................................................................................................................34

7.3.16 LaneDelimitation ..........................................................................................................................................................34

7.3.17 LaneId .....................................................................................................................................................................................35

7.3.18 LaneMarkingStatus .....................................................................................................................................................35

7.3.19 LaneStatus ..........................................................................................................................................................................35

7.3.20 LaneType .............................................................................................................................................................................35

7.3.21 MarkingColour ................................................................................................................................................................36

7.3.22 MaterialType ....................................................................................................................................................................37

7.3.23 MaxLenghtOfPlatoon .................................................................................................................................................37

7.3.24 MaxNoOfVehicles ..........................................................................................................................................................37

7.3.25 PriorityLevel .....................................................................................................................................................................37

7.3.26 Provider ................................................................................................................................................................................37

7.3.27 RSCUnit .................................................................................................................................................................................37

7.3.28 SaeAutomationLevel ..................................................................................................................................................38

7.3.29 Temperature .....................................................................................................................................................................38

7.3.30 TreatmentType ...............................................................................................................................................................38

7.3.31 VcClass ...................................................................................................................................................................................38

7.3.32 VcOption ...............................................................................................................................................................................38

7.3.33 WearLevel ...........................................................................................................................................................................39

7.3.34 Zid ..............................................................................................................................................................................................39

Annex A (normative) ASN.1 modules ................................................................................................................................................................40

Annex B (informative) Visual examples of location container ...............................................................................................41

Bibliography .............................................................................................................................................................................................................................48

iv PROOF/ÉPREUVE © ISO 2020 – All rights reserved
---------------------- Page: 4 ----------------------
ISO/TS 19321:2020(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: www .iso .org/ iso/ foreword .html.

This document was prepared by the European Committee for Standardization (CEN) Technical

Committee CEN/TC 278, Intelligent transport systems (ITS), in collaboration with Technical Committee

ISO/TC 204, Intelligent transport systems, in accordance with the Agreement on technical cooperation

between ISO and CEN (Vienna Agreement).

This second edition cancels and replaces the first edition (ISO/TS 19321:2015) which has been

technically revised.
The main changes compared to the previous edition are as follows.
— Several containers have been renamed or newly introduced.

— 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 (e.g. data

elements and data frames) 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.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
© ISO 2020 – All rights reserved PROOF/ÉPREUVE v
---------------------- Page: 5 ----------------------
ISO/TS 19321:2020(E)
Introduction

In a Cooperative Intelligent Transport System (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.

The road operators are responsible for road setup, operation, signage, and maintenance for traffic

management and road safety, and in some countries, also for the enforcement of road laws. For road

operators, efficient transport of vehicles on roadways ensures a safe and predictable trip for all road

users. Road operators, together with equipment manufacturers, be it that they are of vehicles or of

roadside equipment, contribute to how road information is properly presented to drivers.

So far, one defined C-ITS method for notifying road users of road and/or 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).

This document supports mandatory and advisory road signage such as contextual speeds and road

works warnings. 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 not correspond to physical road signs (a

virtual sign) or correspond to road works. In-vehicle information (IVI) does not include identification of

road events as already provided by DENM.

This document provides a toolbox of information elements for IVI. It can be used to fulfil the

requirements of the service provider considering the needs of receiving ITS-S. The container concept

provides a way for an ITS-S to manage the relevant IVI information, determine where the IVI is relevant,

and to provide details for the application of IVI. The description of data elements encompasses the data

syntax and semantics, i.e. a definition of data format and content, together with a description of how to

use those data elements.

This document is of an enabling nature. It does not specify which information is necessary for a certain

service, but it supports those IVI information elements that can be necessary to be transmitted to a

receiving ITS-S to carry out a certain service. Usage of the IVI information elements depends on the

specific context and application of IVI for a specific service and usage is established as mandatory or

optional only for messaging purposes, not for application purposes. The IVI Structure is intended to be

profiled to fulfil the requirements of a specific service.

This document refers to ISO 14823 as one system of standardized codes for existing road signs codes.

NOTE ISO 14823 does not contain codes for specific national or regional signs that are not commonly used,

and it does not represent a catalogue of road sign pictograms for all applicable nations.

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TECHNICAL SPECIFICATION ISO/TS 19321:2020(E)
Intelligent transport systems — Cooperative ITS —
Dictionary of in-vehicle information (IVI) data structures
1 Scope

This document 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).

A general, extensible data structure is specified, which is split into structures called containers to

accommodate current-day information. Transmitted information includes IVI such as contextual

speed, road works warnings, vehicle restrictions, lane restrictions, road hazard warnings, location-

based services, re-routing. The information in the containers is organized in sub-structures called data

frames and data elements, which are described in terms of its content and its syntax.

The data structures are specified as communications agnostic. This document does not provide the

communication protocols. This document provides scenarios for usage of the data structure, e.g. in case

of real time, short-range communications.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 639-1, Codes for the representation of names of languages — Part 1: Alpha-2 code

ISO 14906, Electronic fee collection — Application interface definition for dedicated short-range

communication
ISO 14823, Intelligent transport systems — Graphic data dictionary

ISO/TS 19091, Intelligent transport systems — Cooperative ITS — Using V2I and I2V communications for

applications related to signalized intersections

ISO 24534-3, Automatic vehicle and equipment identification — Electronic registration identification (ERI)

for vehicles — Part 3: Vehicle data

ETSI/TS 102 894-2 V1.3.1, Intelligent Transport Systems (ITS); Users and applications requirements;

Part 2: Applications and facilities layer common data dictionary
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
application data unit
data unit exchanged between ITS Station applications
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ISO/TS 19321:2020(E)
3.2
container

group of data frames (3.4) and data elements (3.3) semantically belonging together in one place in the

in-vehicle information (3.8) structure
3.3
data element
data type that contains one single data
[SOURCE: ETSI/TS 102 894-2 V1.3.1]
3.4
data frame
data type that contains more than one data element (3.3) in a predefined order
[SOURCE: ETSI/TS 102 894-2 V1.3.1]
3.5
detection zone

part of the road network that is passed by a vehicle in approach of the relevance zone (3.17)

3.6
digital map database

structured set of digital and alphanumeric data portraying geographic locations and relationships of

spatial features
[SOURCE: ISO 17572-1:2015, 2.1.10, modified — Note to entry has been deleted.]
3.7
driver awaren
...

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