ISO 21219-1:2023

Intelligent transport systems - Traffic and travel information (TTI) via transport protocol experts group, generation 2 (TPEG2) - Part 1: Introduction, numbering and versions (TPEG2-INV)

This document defines an index to the complete set of TPEG Generation 2 toolkit components and applications. New applications are enumerated with an application identification (AID) as they are added to the TPEG applications family. NOTE 1 This document will be updated when new applications occur in order to indicate the latest status and the inter-working of the various TPEG specifications. This document will be revised as a new edition every time a new issue of any other specification is issued. NOTE 2 Preliminary AIDs are allocated and managed by TISA and are listed at Reference.

Systèmes intelligents de transport — Informations sur le trafic et le tourisme via le groupe expert du protocole de transport, génération 2 (TPEG2) — Partie 1: Introduction, numérotage et versions (TPEG2-INV)

General Information

• Status: Published
• Publication Date: 05-Mar-2023
• ICS: 03.220.20 - Road transport
• ICS: 35.240.60 - IT applications in transport
• Technical Committee: ISO/TC 204 - Intelligent transport systems
• Drafting Committee: ISO/TC 204/WG 10 - Traveller information systems
• Current Stage: 6060 - International Standard published
• Start Date: 06-Mar-2023
• Due Date: 04-Sep-2022
• Completion Date: 06-Mar-2023

Relations

• Revises: ISO/TS 21219-1:2016 - Intelligent transport systems - Traffic and travel information (TTI) via transport protocol experts group, generation 2 (TPEG2) - Part 1: Introduction, numbering and versions (TPEG2-INV)
• Effective Date: 23-Apr-2020

Overview

ISO 21219-1:2023 - "Intelligent transport systems - Traffic and travel information (TTI) via Transport Protocol Experts Group, generation 2 (TPEG2) - Part 1: Introduction, numbering and versions (TPEG2‑INV)" is the index and versioning reference for the TPEG Generation 2 toolkit. It defines the Application Identification (AID) scheme, the numbering and versioning rules for TPEG2 components and applications, and the update/maintenance policy for the TPEG2 family. This first edition (2023) upgrades the document from a Technical Specification to an International Standard and aligns TPEG2 with current UML‑based development and physical format conversion practices (binary and XML).

Key topics and technical requirements

• Application identification (AID): A unique AID is assigned to each TPEG2 application. Examples include:
  • SNI (Service and Network Information) - AID 0x0000
  • PKI (Parking Information) - AID 0x0003
  • TEC (Traffic Event Compact) - AID 0x0005
  • WEA (Weather Information) - AID 0x000A
• Test AID mechanism: Test instances are flagged by setting the most significant bit (add hex 0x8000). Client devices must ignore content flagged with a Test AID to avoid processing test streams in production.
• Versioning and updates: The document is the central index and will be revised whenever other TPEG2 specifications are updated or new applications are added. Preliminary AIDs are managed by TISA (Traveller Information Services Association).
• Definitions and structure: Includes core terms (service, service component), abbreviated terms, and the relationship between TPEG1 and TPEG2 application versions to ensure interoperability.
• No normative references: The standard functions as an index and coordination document rather than a prescriptive technical specification.

Applications and practical value

• Ensures consistent numbering and version control across the TPEG2 toolkit, which is critical for:
  • Broadcasters and broadcast middleware (DAB, DVB, RDS-TMC)
  • Telematics and in‑vehicle infotainment (IVI) vendors
  • Navigation system integrators and mapping providers
  • Traffic data service providers and content aggregators
• Enables safe testing of new TPEG applications within live multiplexes using Test AIDs without disrupting production services.
• Supports conversion workflows from UML to binary and XML physical formats, helping implementers maintain synchronized documentation and formats.

Who should use this standard

• Standards developers, system architects and implementers working with TPEG2, TTI (traffic and travel information) services, and intelligent transport systems (ITS).
• Automotive OEMs, telematics companies, broadcasters, and third‑party data providers that require consistent application identifiers and versioning for interoperable TTI services.

Related standards

• Other parts of the ISO 21219 TPEG2 series (UML, conversion rules, message management, location referencing) and legacy TPEG1 series (ISO 18234) - consult ISO 21219 series index for full cross‑references.

Keywords: ISO 21219-1, TPEG2, traffic and travel information, AID, application identification, TTI, TISA, intelligent transport systems.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 21219-1
First edition
2023-03
Intelligent transport systems —
Traffic and travel information (TTI)
via transport protocol experts group,
generation 2 (TPEG2) —
Part 1:
Introduction, numbering and versions
(TPEG2-INV)
Systèmes intelligents de transport — Informations sur le trafic et le
tourisme via le groupe expert du protocole de transport, génération 2
(TPEG2) —
Partie 1: Introduction, numérotage et versions (TPEG2-INV)
Reference number
© ISO 2023
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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 1
5 Application identification .3
6 Applications and bearers . 4
7 Other numbers and identifiers .5
Annex A (informative) Overview of parts, naming and versions . 6
Bibliography . 9
iii
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 of 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
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 204, Intelligent transport systems.
This first edition cancels and replaces the first edition (ISO/TS 21219-1:2016), which has been
technically revised.
The main changes are as follows:
— the document status has been changed from Technical Specification (TS) to International Standard
(IS);
— the content has been updated to reflect new TPEG2 specifications and corresponding Application
Identifications (AID), e.g. TPEG2-VLI, TPEG2-WEA, etc.
A list of all parts in the ISO 21219 series can be found on the ISO website.
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.
iv
Introduction
0.1  History
TPEG technology was originally proposed by the European Broadcasting Union (EBU) Broadcast
Management Committee, who established the B/TPEG project group in the autumn of 1997 with a brief
to develop, as soon as possible, a new protocol for broadcasting traffic and travel-related information in
the multimedia environment. TPEG technology, its applications and service features were designed to
enable travel-related messages to be coded, decoded, filtered and understood by humans (visually and/
or audibly in the user’s language) and by agent systems. Originally, a byte-oriented data stream format,
which can be carried on almost any digital bearer with an appropriate adaptation layer, was developed.
Hierarchically structured TPEG messages from service providers to end-users were designed to
transfer information from the service provider database to an end-user’s equipment.
One year later, in December 1998, the B/TPEG group produced its first EBU specifications. Two
documents were released. Part 2 (TPEG-SSF, which became ISO/TS 18234-2) described the syntax,
semantics, and framing structure which was used for all TPEG applications. Meanwhile, Part 4 (TPEG-
RTM, which became ISO/TS 18234-4) described the first application for road traffic messages.
Subsequently, in March 1999, CEN/TC 278, in conjunction with ISO/TC 204, established a group
comprising members of the former EBU B/TPEG and this working group continued development work.
Further parts were developed to make the initial set of four parts, enabling the implementation of a
consistent service. Part 3 (TPEG-SNI, ISO/TS 18234-3) described the service and network information
(SNI) application used by all service implementations to ensure appropriate referencing from one
service source to another.
Part 1 (TPEG-INV, ISO/TS 18234-1) completed the series by describing the other parts and their
relationship. It also contained the application IDs used within the other parts. Additionally, Part 5, the
public transport information application (TPEG-PTI, ISO/TS 18234-5), was developed. The so-called
TPEG-LOC location referencing method, which enabled both map-based TPEG-decoders and non-map-
based ones to deliver either map-based location referencing or human readable text information,
was issued as ISO/TS 18234-6 to be used in association with the other applications of parts of the
ISO/TS 18234 series to provide location referencing.
The ISO 18234 series has become known as TPEG Generation 1.
0.2  TPEG Generation 2
When the Traveller Information Services Association (TISA), derived from former forums, was
inaugurated in December 2007, TPEG development was taken over by TISA and continued in the TPEG
applications working group.
It was about this time that the (then) new Unified Modelling Language (UML) was seen as having major
advantages for the development of new TPEG applications in communities who would not necessarily
have binary physical format skills required to extend the original TPEG TS work. It was also realized
that the XML format for TPEG described within the ISO 24530 series (now superseded) had a greater
significance than previously foreseen, especially in the content-generation segment, and that keeping
two physical formats synchronised, in different standards series, would be rather difficult.
As a result, TISA set about the development of a new TPEG structure that would be UML-based. This has
subsequently become known as TPEG Generation 2.
TPEG2 is embodied in the ISO 21219 series and it comprises many parts covering the introduction,
rules, toolkit and application components. TPEG2 is built around UML modelling and has a core of
rules that contain the modelling strategy covered in ISO 21219-2, ISO 21219-3 and ISO 21219-4 and
the conversion to two current physical formats: binary and XML; others can be added in the future.
TISA uses an automated tool to convert from the agreed UML model XMI file directly into an MS Word
document file that forms the annex for each physical format.
v
TPEG2 has a three-container conceptual structure: message management (ISO 21219-6), application
(several parts) and location referencing (ISO/TS 21219-7). This structure has flexible capability and
can accommodate many differing use cases that have been proposed within the TTI sector and more
broadly for hierarchical message content.
TPEG2 also has many location referencing options as required by the service provider community, any
of which may be delivered by vectoring data included in the location referencing container.
The following classification provides a helpful grouping of the different TPEG2 parts according to their
intended purpose. Note that the list below is potentially incomplete, as it is possible that new TPEG2
parts will be introduced after the publication of this document.
— Toolkit parts: TPEG2-INV (ISO 21219-1), TPEG2-UML (ISO 21219-2), TPEG2-UBCR (ISO 21219-3),
TPEG2-UXCR (ISO 21219-4), TPEG2-SFW (ISO 21219-5), TPEG2-MMC (ISO 21219-6), TPEG2-LRC
(ISO/TS 21219-7).
1) 2)
— Special applications: TPEG2-SNI (ISO 21219-9 ), TPEG2-CAI (ISO 21219-10 ), TPEG2-LTE
(ISO/TS 21219-24).
— Location referencing: TPEG2-OLR (ISO/TS 21219-22), TPEG2-GLR (ISO/TS 21219-21), TPEG2-TLR
(ISO 17572-2), TPEG2-DLR (ISO 17572-3).
3) 4) 5)
— Applications: TPEG2-PKI (ISO 21219-14 ), TPEG2-TEC (ISO 21219-15 ), TPEG2-FPI (ISO 21219-16 ),
6)
TPEG2-TFP (ISO 21219-18), TPEG2-WEA (ISO 21219-19 ), TPEG2-RMR (ISO/TS 21219-23), TPEG2-
EMI (ISO/TS 21219-25), TPEG2-VLI (ISO/TS 21219-26).
TPEG2 has been developed to be broadly (but not totally) backward compatible with TPEG1 to assist in
transitions from earlier implementations, while not hindering the TPEG2 innovative approach and being
able to support many new features, such as dealing with applications with both long-term, unchanging
content and highly dynamic content, such as parking information.
This document is based on the TISA specification technical/editorial version reference:
SP20008 version 205.
1) Under preparation. Stage at the time of publication: ISO/PRF 21219-9:2023.
2) Under preparation. Stage at the time of publication: ISO/PRF 21219-10:2023.
3) Under preparation. Stage at the time of publication: ISO/PRF 21219-14:2023.
4) Under preparation. Stage at the time of publication: ISO/PRF 21219-15:2023.
5) Under preparation. Stage at the time of publication: ISO/DIS 21219-16:2023.
6) Under preparation. Stage at the time of publication: ISO/DIS 21219-19:2023.
vi
INTERNATIONAL STANDARD ISO 21219-1:2023(E)
Intelligent transport systems — Traffic and travel
information (TTI) via transport protocol experts group,
generation 2 (TPEG2) —
Part 1:
Introduction, numbering and versions (TPEG2-INV)
1 Scope
This document defines an index to the complete set of TPEG Generation 2 toolkit components and
applications. New applications are enumerated with an application identification (AID) as they are
added to the TPEG applications family.
NOTE 1 This document will be updated when new applications occur in order to indicate the latest status and
the inter-working of the various TPEG specifications. This document will be revised as a new edition every time a
new issue of any other specification is issued.
NOTE 2 Preliminary AIDs are allocated and managed by TISA and are listed at Reference [10].
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
service
collection of different information streams (applications) logically bound together and delivered from a
service provider to the end user
3.2
service component
information stream (application) that is part of a service (3.1)
Note 1 to entry: A TPEG stream is logically divided into parts known as service components. Each service
component carries an application instance. A service component is eff
...