ISO 24298:2025

Intelligent transport systems — Public transport — Light emitting diode (LED) destination board system for public transport buses

This document specifies the constructional and performance requirements and methods of tests for light emitting diode destination board systems (LEDDBSs) for use in all categories of buses and coaches (including mini/midi buses).

Titre manque

General Information

• Status: Published
• Publication Date: 08-Jul-2025
• ICS: 31.120 - Electronic display devices
• ICS: 35.240.60 - IT applications in transport
• Technical Committee: ISO/TC 204 - Intelligent transport systems
• Drafting Committee: ISO/TC 204/WG 8 - Public transport/emergency
• Current Stage: 6060 - International Standard published
• Start Date: 09-Jul-2025
• Due Date: 30-Apr-2027
• Completion Date: 09-Jul-2025

Standards Content (Sample)

International
Standard
ISO 24298
First edition
Intelligent transport systems —
2025-07
Public transport — Light emitting
diode (LED) destination board
system for public transport buses
Reference number
© ISO 2025
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 . 4
5 Requirements and types of LEDDBS . 4
5.1 Rated voltage .4
5.2 Size of LEDDB display area .4
5.3 Types and requirements of LEDDBS controllers .5
5.4 Other requirements for controllers .5
5.5 Performance requirements .5
5.6 Classification of functional status .6
6 Construction . 6
7 Requirements (Tests) of LEDDBS . 6
7.1 General .6
7.2 Classification of tests .6
7.2.1 Type tests .6
7.2.2 Samples .7
7.2.3 Acceptance tests .8
7.3 Visual examination .8
7.4 Dimensions .8
7.5 Functional test .8
7.6 Performance test .8
7.7 Minimum visibility distance test .8
7.8 Flicker test .9
7.9 Colour test .9
7.10 Insulation resistance test .9
7.11 EMI/EMC test .9
7.12 Electrostatic discharge test .9
7.13 Endurance test .10
7.14 Vibration test .10
7.15 High temperature test . . .10
7.16 Cold test .10
7.17 Damp heat test .11
7.18 Ingress Test . .11
7.19 Corrosion resistance test .11
7.20 Tests for wiring harness .11
7.20.1 General .11
7.20.2 Flammability test .11
7.20.3 Electrical properties .11
7.20.4 Flammability of corrugated sleeves .11
7.21 Reverse polarity test .11
7.22 High voltage test .11
7.23 Transient test on controllers . 12
8 Marking . .12
Annex A (normative) Additional functional requirement of LEDDBS .13
Annex B (normative) Test for corrosion resistance .16
Bibliography . 19

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 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 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
Introduction
Light emitting diode (LED) destination board systems are used widely around the world in public
transportation. A study estimated that the global market for real time passenger information system could
[3]
have been valued at $20 billion. Further, access to real-time arrival information on transport systems
decreases the perceived and actual wait times for riders and improves user satisfaction.
Improper and unsystematic display of destination boards on buses causes problems for the commuting
public. Installation of destination boards with an LED display, as covered in this document, will be very
helpful in providing information on route numbers and destinations to the commuting public.
This document covers the constructional and performance requirements of LED destination board systems.

v
International Standard ISO 2429
...

International
Standard
ISO 24298
First edition
Intelligent transport systems —
Public transport — Light emitting
diode (LED) destination board
system for public transport buses
PROOF/ÉPREUVE
Reference number
© ISO 2025
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
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 4
5 Requirements and types of LEDDBS . 4
5.1 Rated voltage .4
5.2 Size of LEDDB display area .4
5.3 Types and requirements of LEDDBS controllers .5
5.4 Other requirements for controllers .5
5.5 Performance requirements .5
5.6 Classification of functional status .6
6 Construction . 6
7 Requirements (Tests) of LEDDBS . 6
7.1 General .6
7.2 Classification of tests .6
7.2.1 Type tests .6
7.2.2 Samples .7
7.2.3 Acceptance tests .8
7.3 Visual examination .8
7.4 Dimensions .8
7.5 Functional test .8
7.6 Performance test .8
7.7 Minimum visibility distance test .8
7.8 Flicker test .9
7.9 Colour test .9
7.10 Insulation resistance test .9
7.11 EMI/EMC test .9
7.12 Electrostatic discharge test .9
7.13 Endurance test .10
7.14 Vibration test .10
7.15 High temperature test . . .10
7.16 Cold test .10
7.17 Damp heat test .11
7.18 Ingress Test . .11
7.19 Corrosion resistance test .11
7.20 Tests for wiring harness .11
7.20.1 General .11
7.20.2 Flammability test .11
7.20.3 Electrical properties .11
7.20.4 Flammability of corrugated sleeves .11
7.21 Reverse polarity test .11
7.22 High voltage test .11
7.23 Transient test on controllers . 12
8 Marking . .12
Annex A (normative) Additional functional requirement of LEDDBS .13
Annex B (normative) Test for corrosion resistance .16
Bibliography . 19
PROOF/ÉPREUVE
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 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 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.
PROOF/ÉPREUVE
iv
Introduction
Light emitting diode (LED) destination board systems are used widely around the world in public
transportation. A study estimated that the global market for real time passenger information system could
[3]
have been valued at $20 billion. Further, access to real-time arrival information on transport systems
decreases the perceived and actual wait times for riders and improves user satisfaction.
Improper and unsystematic display of destination boards on buses causes problems for the commuting
public. Installation of destination boards with an LED display, as covered in this document, will be very
helpful in providing information on route numbers and destinations to the commuting public.
This document covers the constructional and performance requirements of LED destination board systems.
PROOF/ÉPREUVE
v
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Style Definition
ISO/DISPRF 24298:2024(en) .
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ISO /TC 204/WG 8
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Secretariat: ANSI
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Date: 20242025-05-3014 1.27 cm, Footer distance from edge: 1.27 cm
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Intelligent Transport Systems –transport systems — Public
and Asian text, Adjust space between Asian text and
Transport –transport — Light Emitting Diodeemitting diode (LED)
numbers
Destination Board Systemdestination board system for Public
Transport Busespublic transport buses
PROOF
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ISO /PRF 24298-1:2022(X:2025(en)
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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, Formatted: No page break before, Adjust space
or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO between Latin and Asian text, Adjust space between
at the address below or ISO’s member body in the country of the requester. Asian text and numbers
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ISO copyright office
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CP 401 • Ch. de Blandonnet 8
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CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
Formatted: French (Switzerland)
EmailE-mail: [e-mail]
Formatted: French (Switzerland)
Website: www.iso.orgwww.iso.org
Formatted: French (Switzerland)
Published in Switzerland
Formatted: English (United Kingdom)
Formatted: English (United Kingdom)

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ii © ISO 2022 2025 – All rights reserved
ii
ISO/DISPRF 24298:20242025(en)
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Line spacing: single, Tab stops: Not at 0.71 cm
Contents
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Foreword . v
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Introduction . vi
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1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 4
5 Requirements and types of LEDDBS . 5
6 Construction . 7
7 Requirements (Tests) of LEDDBS . 7
8 Marking . 14
Annex A (normative) Additional functional requirement of LEDDBS . 15
Annex B (normative) Test for corrosion resistance . 18
Bibliography . 22

Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated Terms . 3
5 Rated Voltage, Size and Types of LEDDBS . 3
6 Construction . 5
7 Requirements (Tests) Of LEDDBS . 5
8 Marking . 11
Annex A (normative) Additional Functional Requirement of LEDDBS . 12
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A.1 Usability/Functionality/Capability . 12
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Tab stops: Not at 17.2 cm
A.1.1 Display characteristics . 12
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A.1.2 Two-way communication with central control centre via LEDDBS controller . 13
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iii
ISO /PRF 24298-1:2022(X:2025(en)
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A.2 Dimensions and technical specifications of destinations signs . 13
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A.2.1 LED and display quality - front, side and rear signs: . 13
A.2.2 LED and display - quality inner sign . 13
A.2.3 Structure . 13
A.3 Technical specifications of LEDDBS controller . 14
Annex B (normative) Test for Corrosion Resistance . 15
B.1 General . 15
B.2 Apparatus . 15
B.2.1 Salt Spray Chamber . 15
B.2.2 Parts of Salt Spray Chamber . 15
B.3 Procedure . 15
Bibliography . 17
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iv © ISO 2022 2025 – All rights reserved
iv
ISO/DISPRF 24298:20242025(en)
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Foreword
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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 Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
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
Formatted: Hyperlink, No underline, Font color: Auto,
Attention is drawnISO draws attention to the possibility that some of the elementsimplementation of this
English (United Kingdom)
document may beinvolve the subjectuse 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. 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),
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.htmlwww.iso.org/members.html.
Formatted: Font: 10 pt
Formatted: FooterCentered, Left, Space Before: 0 pt,
Tab stops: Not at 17.2 cm
Formatted: Font: 10 pt
Formatted: Font: 11 pt
Formatted: FooterPageRomanNumber, Left, Space
After: 0 pt, Tab stops: Not at 17.2 cm
v
ISO /PRF 24298-1:2022(X:2025(en)
Formatted: Font: 11 pt, Bold
Formatted: Font: 11 pt, Bold
Formatted: HeaderCentered, Space After: 0 pt, Line
Introduction
spacing: single
Formatted: Font: 11 pt, Bold
Light emitting diode (LED) destination board systems are used widely around the world in public
transportation. AA study estimated that the global market for real time passenger information system could
1 [ ]
have been valued at $20 billion. . 0 Further, access to real-time arrival information on transport systems
decreases the perceived and actual wait times for riders and improves user satisfaction.
Improper and unsystematic display of destination boards on buses causes problems for the commuting public.
Installation of destination boards with an LED display, as covered in this document, will be very helpful in
providing information on route numbers and destinations to the commuting public.
This document covers the constructional and performance requirements of LED destination board systems.
Formatted: Font: 10 pt
Formatted: Font: 10 pt
Formatted: Font: 11 pt
Formatted: FooterPageRomanNumber, Space After: 0
Source: World Bank Report pt, Line spacing: single
vi © ISO 2022 2025 – All rights reserved
vi
DRAFT International Standard ISO/DIS 24298:2024(en)

Formatted: Left
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Intelligent transport systems – — Public transport –— Light emitting
and Asian text, Adjust space between Asian text and
diode (LED) destination board system for public transport buses
numbers
1 Scope
This document specifies the constructional and performance requirements and methods of tests for light
Formatted: Default Paragraph Font
emmittingemitting diode destination board systems (LEDDBSs) for use in all categories of buses and coaches
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(including mini/midi buses).
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2 Normative references
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...