SIST EN ISO 14819-2:2021/oprA1:2026
(Amendment)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)
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)
Intelligente Transportsysteme - Verkehrs- und Reiseinformationen über Verkehrsmeldungskodierung - Teil 2: Ereignis- und Informationscodes für den digitalen Radiokanal für Verkehrsmeldungen (RDS-TMC) unter Nutzung von ALERT-C - Änderung 1 (ISO 14819-2:2021/DAmd1:2025)
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 (ISO 14819-2:2021/DAmd1:2025)
Inteligentni transportni sistemi - Sporočila prometnih in potovalnih informacij prek kodiranih prometnih sporočil - 2. del: Kode za dogodke in informacije za radijski podatkovni sistem (RDS) - Prometni informacijski kanal (RDS-TMC), ki uporablja sistem ALERT-C - Dopolnilo A1 (ISO 14819-2:2021/DAmd1:2025)
General Information
- Status
- Not Published
- Public Enquiry End Date
- 11-Feb-2026
- Technical Committee
- ITC - Information technology
- Current Stage
- 4020 - Public enquire (PE) (Adopted Project)
- Start Date
- 10-Dec-2025
- Due Date
- 29-Apr-2026
Relations
- Effective Date
- 11-Jun-2025
Overview
The SIST EN ISO 14819-2:2021/oprA1:2026 standard is an essential update to the intelligent transport systems (ITS) framework, focusing on enhancing the coding of traffic and travel information messages. Specifically, it introduces Amendment 1 to Part 2 of the ISO 14819 series, which defines event and information codes for the Radio Data System-Traffic Message Channel (RDS-TMC) using the ALERT-C protocol. Developed under the collaboration of ISO and CEN, this amendment aims to refine and expand the range of coded traffic event information transmitted via RDS-TMC, used widely in Europe and beyond for real-time traffic updates.
Key Topics
- Traffic Message Coding: The standard addresses the encoding of traffic and travel information into machine-readable codes suitable for transmission over RDS-TMC, enabling automated interpretation by navigation and traffic management systems.
- ALERT-C Protocol: Utilizes the ALERT-C framework for structured, reliable delivery of traffic event and information codes, ensuring interoperability across different ITS platforms.
- Event and Information Codes: Amendment 1 adds new event codes such as those related to traffic disruptions caused by national and regional holidays-codes 186 and 187 respectively-which help in refining traffic message specificity.
- Supplementary Information: Expansion of the supplementary information list, including clarifications for metric and non-metric units textual descriptions to improve message clarity and consistency among languages.
- International Collaboration: Developed jointly by ISO Technical Committee ISO/TC 204 and CEN Technical Committee CEN/TC 278 under the ISO-CEN Vienna Agreement, ensuring widespread applicability and recognition.
Applications
- Real-Time Traffic Management: Traffic control centers can utilize the standardized event codes to broadcast accurate, real-time travel information, facilitating better traffic flow management during holidays or special events.
- Navigation Systems: Automotive navigation devices and in-vehicle information systems interpret these codes to provide drivers with timely route updates and travel hazard warnings encoded with high precision.
- Public Transport Information: Transit authorities can leverage the standard to inform passengers about expected delays or reroutes due to traffic events, improving service reliability and passenger experience.
- Traffic Data Integration: ITS service providers can integrate RDS-TMC messages into broader traffic data platforms, enhancing cross-border consistency and data exchange for transport analytics.
- International Traffic Coordination: By adopting internationally recognized coding schemes, cross-national traffic and travel information sharing is streamlined, supporting EU-wide and global ITS initiatives.
Related Standards
- ISO 14819 Series: The broader standard series that governs traffic message coding, including Part 1 (location referencing) and other parts that complement Part 2's event and information coding.
- RDS-TMC Protocol Specifications: International standards defining the transport system for traffic messaging over FM radio broadcasts, which this amendment supports.
- CEN/TS 16157: European standards for travel and traffic information services that rely on standardized coded messages to ensure interoperability.
- ISO/IEC 14819-1 & ISO 14819-3: Other parts of the intelligent transport systems standards addressing related message coding and processing aspects.
- IEC 61850 Series: While focused on power systems, it provides insights on standardization and communication protocols akin to ITS messaging practices.
Implementing SIST EN ISO 14819-2:2021/oprA1:2026 ensures enhanced accuracy and international harmonization of traffic event data, directly improving the reliability of travel information services. This leads to better route planning, safer roads, and optimized traffic management in intelligent transport ecosystems worldwide. For ITS professionals and stakeholders, staying current with these amendments is crucial for integrating up-to-date, standardized traffic message coding into their systems.
Frequently Asked Questions
SIST EN ISO 14819-2:2021/oprA1:2026 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "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)". This standard covers: 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)
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)
SIST EN ISO 14819-2:2021/oprA1:2026 is classified under the following ICS (International Classification for Standards) categories: 03.220.20 - Road transport; 35.240.60 - IT applications in transport. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN ISO 14819-2:2021/oprA1:2026 has the following relationships with other standards: It is inter standard links to SIST EN ISO 14819-2:2021. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN ISO 14819-2:2021/oprA1:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2026
Inteligentni transportni sistemi - Sporočila prometnih in potovalnih informacij prek
kodiranih prometnih sporočil - 2. del: Kode za dogodke in informacije za radijski
podatkovni sistem (RDS) - Prometni informacijski kanal (RDS-TMC), ki uporablja
sistem ALERT-C - Dopolnilo A1 (ISO 14819-2:2021/DAmd1:2025)
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)
Intelligente Transportsysteme - Verkehrs- und Reiseinformationen über
Verkehrsmeldungskodierung - Teil 2: Ereignis- und Informationscodes für den digitalen
Radiokanal für Verkehrsmeldungen (RDS-TMC) unter Nutzung von ALERT-C -
Änderung 1 (ISO 14819-2:2021/DAmd1:2025)
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 (ISO 14819-2:2021/DAmd1:2025)
Ta slovenski standard je istoveten z: EN ISO 14819-2:2021/prA1:2025
ICS:
03.220.20 Cestni transport Road transport
35.240.60 Uporabniške rešitve IT v IT applications in transport
prometu
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
Amendment
ISO 14819-2:2021/
DAM 1
ISO/TC 204
Intelligent transport systems —
Secretariat: ANSI
Traffic and travel information
messages via traffic message
Voting begins on:
2025-11-24
coding —
Voting terminates on:
Part 2: 2026-02-16
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
ICS: 03.220.20; 35.240.60
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO 14819-2:2021/DAM 1:2025(en)
DRAFT
ISO 14819-2:2021/DAM 1:2025(en)
Amendment
ISO 14819-2:2021/
DAM 1
ISO/TC 204
Intelligent transport systems —
Secretariat: ANSI
Traffic and travel information
messages via traffic message
Voting begins on:
coding —
Voting terminates on:
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
ICS: 03.220.20; 35.240.60
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopyin
...
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