ISO 17573-3:2024/FDAmd 1

• 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 5 - Fee and toll collection
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Start Date: 31-Aug-2026
• Completion Date: 31-Aug-2026

• Consolidates: EN ISO 17573-3:2024/FprA1:2026 - Electronic fee collection - System architecture for vehicle-related tolling - Part 3: Data dictionary - Amendment 1 (ISO 17573-3:2024/FDAmd1:2026)
• Effective Date: 12-Feb-2026
• Amends: ISO 17573-3:2024 - Electronic fee collection — System architecture for vehicle-related tolling — Part 3: Data dictionary
• Effective Date: 07-Jun-2025

Overview

ISO 17573-3:2024/FDAmd 1 is an amendment to the international standard for electronic fee collection (EFC) system architecture, specifically focusing on the data dictionary for vehicle-related tolling. Developed by ISO Technical Committee 204 (Intelligent Transport Systems), and overseen by ANSI as the secretariat, this standard amendment enhances data definitions critical to interoperable and efficient tolling systems.

This document refines and expands on data elements essential for conveying vehicle characteristics, classification, and tariff information in electronic toll collection environments. The goal is to support seamless data exchange between different systems and operators, facilitating the accurate assessment and collection of road usage fees.

Key Topics

• Data Dictionary Updates: The amendment introduces new data elements and clarifies existing definitions, ensuring more precise communication within EFC systems.
• Vehicle Identification: Inclusion of new identifiers such as the structured Japanese license plate number enables greater international applicability.
• Engine Characteristics: Expanded list of engine and fuel types, covering various hybrid and dual-fuel configurations, enhances the accuracy of vehicle classification for tolling purposes.
• Vehicle Class Descriptions: Updated methodologies for classifying vehicles (trailer/no trailer, UNECE vehicle classes, local scheme adaptation) support both European and global toll schemes.
• Tariff Class Description: Revised data structure for specifying tariff classes, supporting more granular and flexible fee determination.
• Data Integrity: Implementation of cryptographic hash verification (SHA-256) for the data dictionary ensures data authenticity and reliability.
• Use of ASN.1: Data objects are formally defined using Abstract Syntax Notation One (ASN.1), promoting consistency and interoperability across EFC systems.

Applications

ISO 17573-3:2024/FDAmd 1 supports a range of real-world applications in the management of electronic tolling and intelligent transport systems:

• Electronic Toll Collection (ETC) Operators
  Utilize enhanced vehicle data and class codes to improve accuracy in fee attribution and interoperability with international systems.

• System Integrators and Solution Providers
  Benefiting from updated definitions and data types, solution providers can optimize system integration, ensuring compatibility with evolving vehicle technologies and hybrid propulsion systems.

• Transportation Authorities and Policy Makers
  Leverage standardized data semantics for consistent policy enforcement, reporting, and analytical assessment of road usage patterns.

• International Tolling Schemes
  The inclusion of global identifiers and flexible class descriptions facilitates cross-border harmonization and supports international travel.

• Data Security
  The cryptographic hashing mechanism enables stakeholders to verify the integrity of data files, supporting secure EFC operations.

Related Standards

ISO 17573-3:2024/FDAmd 1 is closely aligned with several other international standards essential for comprehensive EFC solutions:

• ISO 17573 Series – The broader series addresses system architecture and interfaces for vehicle-related tolling.
• ISO/IEC 8824-1 (ASN.1) – Defines the notation for data object specification, critical for interoperability.
• UNECE Vehicle Classification Standards – Referenced for vehicle classes and regulatory compliance.
• NIST 180-4 – Specifies the SHA-256 cryptographic hash algorithm for data verification.

By addressing evolving transportation technologies and harmonizing data definitions, ISO 17573-3:2024/FDAmd 1 advances the reliability, interoperability, and security of electronic fee collection systems worldwide. Adopting this standard ensures that system architects, operators, and stakeholders are equipped to manage the complex requirements of modern tolling environments.

FINAL DRAFT
Amendment
ISO 17573-3:2024/
FDAM 1
ISO/TC 204
Electronic fee collection — System
Secretariat: ANSI
architecture for vehicle-related
Voting begins on:
tolling —
2026-08-31
Part 3:
Voting terminates on:
2026-10-26
Data dictionary
AMENDMENT 1
Perception de télépéage — Architecture de systèmes pour le
péage lié aux véhicules —
Partie 3: Dictionnaire de données
AMENDEMENT 1
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 SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/CEN PARALLEL PROCESSING LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO 17573-3:2024/FDAM 1:2026(en) © ISO 2026

FINAL DRAFT
ISO 17573-3:2024/FDAM 1:2026(en)
Amendment
ISO 17573-3:2024/
FDAM 1
ISO/TC 204
Electronic fee collection — System
Secretariat: ANSI
architecture for vehicle-related
Voting begins on:
tolling —
Part 3:
Voting terminates on:
Data dictionary
AMENDMENT 1
Perception de télépéage — Architecture de systèmes pour le
péage lié aux véhicules —
Partie 3: Dictionnaire de données
AMENDEMENT 1
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 SUPPOR TING DOCUMENTATION.
© ISO 2026
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/CEN PARALLEL PROCESSING
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
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 Reference number
ISO 17573-3:2024/FDAM 1:2026(en) © ISO 2026

ii
ISO 17573-3:2024/FDAM 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 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).
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 in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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.
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.

iii
ISO 17573-3:2024/FDAM 1:2026(en)
Electronic fee collection — System architecture for vehicle-
related tolling —
Part 3:
Data dictionary
AMENDMENT 1
5.2.3
Below Table 3, add the following text between the penultimate and last items in the list:

— japanStructuredLpn, indicating a structured Japanese licence plate number in the data element
licencePlateNumber;
5.2.21
Below Table 21, add the following text between the penultimate and last items in the list:

— dualFuelDieselLpg, indicating dual operating with diesel and liquefied petroleum gas;
— dualFuelPetrolEthanolCng, indicating dual operating with petrol ethanol (see definitio
...

ISO 17573-3:2024/FDAMFDAmd 1:2026(en)
ISO/TC 204
Secretariat: ANSI
Date: 2026-07-13xx
Second edition
AMENDMENT 1
Electronic fee collection — System architecture for vehicle-related
tolling —
Part 3:
Data dictionary
AMENDMENT 1
Perception de télépéage — Architecture de systèmes pour le péage lié aux véhicules —
Partie 3: Dictionnaire de données
AMENDEMENT 1
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FDIS stage
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 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).
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
in respect thereof. As of the date of publication of this document, ISO had not received notice of (a) patent(s)
which may be required to implement this document. However, implementers are cautioned that this may not
represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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.
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
Electronic fee collection — System architecture for vehicle-related
tolling — Part 3: Data dictionary
AMENDEMENT 1
Part 3:
Data dictionary
AMENDMENT 1
5.2.3, Alphabetindicator
Below Table 3, add the following text between the penultimate and last items in the list:

— — japanStructuredLpn, indicating a structured Japanese licence plate number in the data element
licencePlateNumber;
5.2.21, EngineCharacteristics
Below Table 21, add the following text between the penultimate and last items in the list:

— — dualFuelDieselLpg, indicating dual operating with diesel and liquefied petroleum gas;
— — dualFuelPetrolEthanolCng, indicating dual operating with petrol ethanol (see definition for
code petrolEthanol) and compress natural gas;
— — dualFuelPetrolEthanolLpg, indicating dual operating with petrol ethanol (see definition for
code petrolEthanol) and liquefied petroleum gas;
— — hybridPetrolEthanolExternalBattery, indicating hybrid drive with petrol ethanol (see
definition for code petrolEthanol) and electric engine with external chargeable battery (plug-in
hybrid);
— — combinedPetrolEthanolElectricEngine, indicating hybrid drive with petrol ethanol (see
definition for code petrolEthanol) and electric engine (non-plug-in hybrid);
— — hybridBivalentDieselCngExternalBattery, indicating hybrid drive with bivalent operating
engine with diesel and compressed natural gas, and electric engine with external chargeable battery (plug-
in hybrid);
— — combinedBivalentDieselCngElectricEngine, indicating hybrid drive with bivalent
operating engine with diesel and compressed natural gas, and electric engine (non-plug-in hybrid);
ISO
...