ISO 21734-1:2022

INTERNATIONAL ISO
STANDARD 21734-1
First edition
2022-11
Intelligent transport systems —
Performance testing for connectivity
and safety functions of automated
driving buses in public transport —
Part 1:
General framework
Systèmes de transport intelligents - Essais de performance pour
les fonctions de connectivité et de sécurité des bus à conduite
automatisée dans les transports publics —
Partie 1: Cadre général
Reference number
© ISO 2022
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ii
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Terms and definitions . 1
3.2 Abbreviated terms . 5
4 General information . 5
4.1 ISO 21734 series overview and structure . 5
4.2 Purpose of the ISO 21734 series . 6
5 ADB system Components . 6
5.1 Overview . 6
5.2 ADB component . 6
5.3 MC centre component . 7
5.4 IoT infrastructure component . 7
5.5 Smart bus station component . 7
5.6 ADB user component . 7
6 ADB system framework . 8
6.1 Overview . 8
6.2 Safety aspect of ADB system framework . 8
6.2.1 General . 8
6.2.2 Road infrastructure . 8
6.2.3 Safety performance test elements of the ADB operation . 9
6.3 Connectivity aspect of the ADB system framework . 10
6.3.1 General . 10
6.3.2 Connectivity infrastructure . 10
6.3.3 Connectivity performance test elements of ADB operation . 11
6.4 ADB system framework requirements .12
6.4.1 ADB component requirements.12
6.4.2 MC centre component requirements . 13
6.4.3 IoT infrastructure requirements . 16
6.4.4 Smart bus station requirements . 16
6.4.5 ADB user requirements . 17
6.5 ADB service framework . 18
7 Required data sets .19
7.1 General . 19
7.2 Operation . 20
7.2.1 Signalized intersection case . . 20
7.2.2 Crosswalk case . 21
7.2.3 Bus stop case. 22
7.3 ADB service . 23
8 Use cases .25
8.1 General . 25
8.2 Left turn on intersection .25
8.2.1 Use case 1-1: Protected left turn on intersection . 25
8.2.2 Use case 1-2: Permitted left turn on intersection . 26
8.3 Straight forward on intersection . 27
8.3.1 Use case 2: Straight forward on intersection. 27
8.4 Right turn on intersection . .28
8.4.1 Use case 3-1: Right turn on intersection .28
8.4.2 Use case 3-2: Right turn on red on intersection .29
iii
8.5 Crosswalk . 30
8.5.1 Use case 4-1: Signalized pedestrian crosswalk .30
8.5.2 Use case 4-2: Non-signalized pedestrian crosswalk . 31
8.6 Smart bus station . 32
8.6.1 Use case 5-1: Bus station with bay . 32
8.6.2 Use case 5-2: Bus station without bay . 33
Bibliography .35
iv
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
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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).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
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This document was prepared by Technical Committee ISO/TC 204, Intelligent transport systems.
A list of all parts in the ISO 21734 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
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v
Introduction
Automated vehicle technology has been developing rapidly in recent years as one of the measures for
reducing automobile accidents caused by human errors and for promoting the automobile industry.
The automated driving bus (ADB) is a new type of public transport mode embedded with automated
vehicle technologies. The progress of the development and deployment of the ADB has been accelerated
in recent years, exceeding the speed of
...