ISO 21719-1:2026

International
Standard
ISO 21719-1
First edition
Electronic fee collection —
2026-03
Personalization of on-board
equipment (OBE) —
Part 1:
Framework
Perception de télépéage — Personnalisation des équipements
embarqués —
Partie 1: Cadre
Reference number
© ISO 2026
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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 . 2
5 Personalization overview . 2
5.1 Process .2
5.2 Personalization assets .3
5.3 System architecture . .3
6 EFC personalization functions . 4
6.1 Overview .4
6.2 Write function .4
6.2.1 Basic functionality .4
6.2.2 Security functions .4
6.2.3 Access protection .5
6.2.4 Application data encryption .5
6.2.5 Write_Request authenticator .6
6.2.6 Write_Response authenticator .6
Annex A (informative) Personalization interfaces . 7
Bibliography . 8

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,
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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).
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patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
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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,in
collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 278,
Intelligent Transport Systems, in accordance with the Agreement on technical cooperation between ISO and
CEN (Vienna Agreement).
This first edition cancels and replaces the first edition of ISO/TS 21719-1:2018, which has been technically
revised.
The main changes are as follows:
— the terms and definitions have been updated;
— ISO 17573-2 has been included as the primary source for harmonized vocabulary across electronic fee
collection (EFC) standards.
A list of all parts in the ISO 21719 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
On-board equipment (OBE) refers to an in-vehicle device that can contain one or more application instances
to support different intelligent transportation system (ITS) implementations, such as electronic fee
collection (EFC). Examples of EFC applications are road toll collection (also known as "road user charging"),
localization augmentation communication (LAC) and compliance check communication (CCC).
To assign the EFC application in the OBE to a certain user or vehicle, or both, personalization is performed.
This means that unique user- and vehicle-related data are transferred to the OBE. This document is
applicable to the EFC interface between the personalization equipment (PE) and OBE as shown in Figure 1
Figure 1 — Scope of this document (box delimited by the dotted line)
CEN/TR 16152 already assesses many aspects of the personalization process and it also defines the overall
personalization assets, i.e. application data, application keys and vehicle data.
Different communication media may be used for transferring these personalization assets to the OBE, but
for all media, common procedures may be applied, such as an overall message exchange framework and
necessary security functionality to ensure data protection and integrity.
By standardizing the personalization procedure, compatibility of personalization equipment is supported,
and the entity responsible for the personalization (e.g. a toll service provider) will be able to outsource parts
of, or a complete, personalization to a third party, e.g. another service provider or a personalization agent.
This document defines common functionality for personalization that is independent of the communication
media and personalization equipment (PE) used. Subsequent parts of the ISO 21719 series define in detail
how the functions are realized on different defined communication media and interfaces.

v
International Standard ISO 21719-1:2026(en)
Electronic fee collection — Personalization of on-board
equipment (OBE) —
Part 1:
...