ISO 14819-2:2021/PRF Amd 1

Systèmes de transport intelligents — Informations sur le trafic et les déplacements via le codage de messages sur le trafic — Partie 2: Codes d'évènements et d'informations pour le système de radiodiffusion de données - canal de messages d'informations sur le trafic (RDS-TMC) avec Alert-C — Amendement 1

General Information

• Status: Not Published
• 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: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Start Date: 22-May-2026
• Completion Date: 30-May-2026

Relations

• Consolidates: EN ISO 14819-2:2021/prA1:2025 - Intelligent transport systems - Traffic and travel information messages via traffic message coding - Part 2: Event and information codes for Radio Data System-Traffic Message Channel (RDS-TMC) using ALERT-C - Amendment 1 (ISO 14819-2:2021/DAmd1:2025)
• Effective Date: 12-Feb-2026
• Consolidates: ISO/IEC 30118-7:2021 - Information Technology – Open Connectivity Foundation (OCF) Specification — Part 7: Wi-Fi easy setup specification
• Effective Date: 21-Jun-2025
• Amends: ISO 14819-2:2021 - Intelligent transport systems — Traffic and travel information messages via traffic message coding — Part 2: Event and information codes for Radio Data System-Traffic Message Channel (RDS-TMC) using ALERT-C
• Effective Date: 07-Jun-2025

Overview

ISO 14819-2:2021/PRF Amd 1 is an amendment to the international standard for traffic and travel information messages using traffic message coding within intelligent transport systems (ITS). Specifically, it updates Part 2 of the ISO 14819 series, which defines event and information codes for the Radio Data System-Traffic Message Channel (RDS-TMC) using ALERT-C formatting. Developed by ISO Technical Committee 204 and in collaboration with CEN/TC 278, this amendment enhances the standardized communication of traffic information via broadcast media, supporting both national and regional transportation networks.

Key Topics

• Intelligent Transport Systems (ITS): ISO 14819-2 supports the effective exchange of timely traffic and travel information, which is vital for traffic management, navigation, and traveler decision-making.
• RDS-TMC & ALERT-C Protocol: The standard formalizes the use of event and information codes within the Radio Data System-Traffic Message Channel, ensuring interoperability across devices and platforms.
• Amendment Content: This amendment introduces new codes and text options to accommodate information about disruptions or changes "due to national holiday" or "due to regional holiday." These additions enhance the standard’s ability to describe context-specific events that impact road and travel conditions.
• Global & Multilingual Support: Adjustments are made for both metric (CEN language) and non-metric (GB-English) units, facilitating applicability in various regions.

Applications

Implementing ISO 14819-2:2021/PRF Amd 1 enables a wide range of practical applications within the intelligent transport ecosystem:

• Traffic Management Centers: Integrate accurate, up-to-date traffic event codes for efficient incident detection, notification, and response.
• Navigation Systems & Connected Vehicles: Use standardized event codes to inform drivers about disruptions, including those due to public holidays, improving route planning and travel reliability.
• Broadcasters and Third-Party Information Providers: Deliver consistent information across different platforms and languages, ensuring that end users, regardless of location, receive reliable and timely travel updates.
• International Operations: The enhanced coding supports organizations involved in cross-border transport operations, where harmonized messaging is critical for safety and efficiency.

By adopting this amendment, organizations enhance the quality and coverage of their traffic information services, aligning with latest international best practices.

Related Standards

For comprehensive implementation and integration, the following standards are closely related:

• ISO 14819-1: Describes the general framework for traffic and travel message coding within ITS.
• ISO 14819 Series: A family of standards governing various aspects of RDS-TMC and ALERT-C event coding.
• CEN/TC 278 Standards: European standards for intelligent transport systems, often harmonized with ISO specifications.
• Other ITS Data Exchange Standards: Such as DATEX II, which supports broader ITS data communication for road and traffic management.

Practical Value

Improvements defined in ISO 14819-2:2021/PRF Amd 1 help road authorities, service providers, and technology companies:

• Meet evolving demands in smart mobility and traffic event communication.
• Ensure seamless, multilingual traffic information exchange.
• Enhance user experience and safety for travelers worldwide.

By following this amendment and related standards, stakeholders ensure compatibility and interoperability of traffic information services across regions and technologies, supporting the advancement of intelligent transport systems globally.

Standards Content (Sample)

International
Standard
ISO 14819-2
Third edition
Intelligent transport systems —
2021-02
Traffic and travel information
messages via traffic message
AMENDMENT 1
coding —
Part 2:
Event and information codes for
Radio Data System-Traffic Message
Channel (RDS-TMC) using ALERT-C
AMENDMENT 1
Systèmes de transport intelligents — Informations sur le trafic et
les déplacements via le codage de messages sur le trafic —
Partie 2: Codes d'évènements et d'informations pour le système
de radiodiffusion de données - canal de messages d'informations
sur le trafic (RDS-TMC) avec Alert-C
AMENDEMENT 1
PROOF/ÉPREUVE
Reference number
ISO 14819-2:2021/Amd.1:2026(en) © ISO 2026

ISO 14819-2:2021/Amd.1:2026(en)
© ISO 2026
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
PROOF/ÉPREUVE
ii
ISO 14819-2:2021/Amd.1:2026(en)
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights
...

ISO 14819-2:2021/AMPRF Amd 1:2026(en)
ISO/TC 204/WG 10
Secretariat: ANSI
Date: 2026-05-0722
Intelligent transport systems — Traffic and travel information
messages via traffic message coding — —
Part 2:
Event and information codes for Radio Data System-Traffic Message
Channel (RDS-TMC) using ALERT-C —
AMENDMENT 1
Systèmes de transport intelligents — Informations sur le trafic et les déplacements via le codage de messages
sur le trafic —
Partie 2: Codes d'évènements et d'informations pour le système de radiodiffusion de données - canal de
messages d'informations sur le trafic (RDS-TMC) avec Alert-C
AMENDEMENT 1
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PROOF
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
EmailE-mail: [e-mail]
Website: www.iso.org
Published in Switzerland
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 documentsdocument 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).
Field Code Changed
Attention is drawnISO draws attentio
...

Norme
internationale
ISO 14819-2
Troisième édition
Systèmes de transport
2021-02
intelligents — Informations sur
le trafic et les déplacements via le
AMENDEMENT 1
codage de messages sur le trafic —
Partie 2:
Codes d'évènements et
d'informations pour le système de
radiodiffusion de données - canal
de messages d'informations sur le
trafic (RDS-TMC) avec Alert-C
AMENDEMENT 1
Intelligent transport systems — Traffic and travel information
messages via traffic message coding —
Part 2: Event and information codes for Radio Data System-
Traffic Message Channel (RDS-TMC) using ALERT-C
AMENDMENT 1
PROOF/ÉPREUVE
Numéro de référence
ISO 14819-2:2021/Amd.1:2026(fr) © ISO 2026

Norme
ISO 14819-2:2021/Amd.1:2026(fr)
internationale
ISO 14819-2
Troisième édition
Systèmes de transport
2021-02
intelligents — Informations sur
le trafic et les déplacements via le
AMENDEMENT 1
codage de messages sur le trafic —
Partie 2:
Codes d'évènements et
d'informations pour le système de
radiodiffusion de données - canal
de messages d'informations sur le
trafic (RDS-TMC) avec Alert-C
AMENDEMENT 1
Intelligent transport systems — Traffic and travel information
messages via traffic message coding —
Part 2: Event and information codes for Radio Data System-
Traffic Message Channel (RDS-TMC) using ALERT-C
AMENDMENT 1
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2026
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
PROOF/ÉPREUVE
CH-1214 Vernier, Genève
Tél.: [phone]
E-mail: [e-mail]
Web: www.iso.org
Publié en Suisse Numéro de référence
ISO 14819-2:2021/Amd.1:2026(fr) © ISO 2026
PROOF/ÉPREUVE
ii
ISO 14819-2:2021/Amd.1:2026(fr)
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes nationaux
de normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est en général
confiée aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude a le droit de faire
partie du comité technique créé à cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec l'ISO participent également aux travaux. L'ISO collabore étroitement avec
la Commission électrotechnique internationale (IEC) en ce qui concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier, de prendre note des différents
critères d'approbation requis pour les différents types de document ISO. Le présent document a été
rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir
www.iso.org/directives).
L'ISO attire l'attention sur le fait que l
...