IEC SRD 63273-1:2023

IEC SRD 63273-1 ®
Edition 1.0 2023-08
SYSTEMS
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Smart city use case collection and analysis – City information modelling –
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IEC SRD 63273-1 ®
Edition 1.0 2023-08
SYSTEMS
REFERENCE DELIVERABLE
colour
inside
Smart city use case collection and analysis – City information modelling –

Part 1: High-level analysis
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.020.20; 03.100.70 ISBN 978-2-8322-7442-2

– 2 – IEC SRD 63273-1:2023 © IEC 2023
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 10
2 Normative references . 10
3 Terms, definitions and abbreviated terms . 10
3.1 Terms and definitions. 10
3.2 Abbreviated terms . 12
4 Contributing to Sustainable Development Goals . 12
4.1 General . 12
4.2 Mapping application areas of city information modelling and SDG 11 . 13
5 City information modelling . 14
5.1 Background . 14
5.2 The roles of city information modelling . 15
5.2.1 General . 15
5.2.2 Data integration . 15
5.2.3 Geo-visualization . 15
5.2.4 Synchronization . 16
5.2.5 Simulation . 16
5.2.6 Data exchange . 16
5.2.7 Data security . 16
5.3 City information modelling and its closely related components . 16
6 City information modelling application area description . 17
6.1 General . 17
6.2 New town planning . 18
6.2.1 Needs statement . 18
6.2.2 Objectives . 19
6.2.3 Current practices . 19
6.2.4 Gaps in the application . 19
6.2.5 Stakeholders . 19
6.2.6 Relationships between the stakeholders . 20
6.2.7 Scenarios . 21
6.2.8 General requirements . 21
6.3 Three-dimensional visualization of property and land administration . 21
6.3.1 Needs statement . 21
6.3.2 Objectives . 21
6.3.3 Current practices . 21
6.3.4 Gaps in the application . 22
6.3.5 Stakeholders . 23
6.3.6 Relationships between the stakeholders . 23
6.3.7 Scenarios . 24
6.3.8 General requirements . 25
6.4 Construction approval management . 25
6.4.1 Needs statement . 25
6.4.2 Objectives . 25
6.4.3 Current practices . 25
6.4.4 Gaps in the application . 26

6.4.5 Stakeholders . 26
6.4.6 Relationships between the stakeholders . 27
6.4.7 Scenarios . 28
6.4.8 General requirements . 29
6.5 Project management during construction . 29
6.5.1 Needs statement . 29
6.5.2 Objectives . 30
6.5.3 Current practices . 30
6.5.4 Gaps in the application . 31
6.5.5 Stakeholders . 31
6.5.6 Relationships between the stakeholders . 32
6.5.7 Scenarios . 32
6.5.8 General requirements . 33
6.6 Real estate registration management . 33
6.6.1 Needs statement . 33
6.6.2 Objectives . 33
6.6.3 Current practices . 33
6.6.4 Gaps in the application . 34
6.6.5 Stakeholders . 34
6.6.6 Relationships between the stakeholders . 35
6.6.7 Scenarios . 36
6.6.8 General requirements . 37
6.7 City management using city brain . 37
6.7.1 Needs statement . 37
6.7.2 Objectives . 37
6.7.3 Current practices . 37
6.7.4 Gaps in the application . 37
6.7.5 Stakeholders . 38
6.7.6 Relationships between the stakeholders . 39
6.7.7 Scenarios . 40
6.7.8 General requirements . 41
6.8 Heritage preservation and revitalization . 41
6.8.1 Needs statement . 41
6.8.2 Objectives . 41
6.8.3 Current practices . 42
6.8.4 Gaps in the application . 42
6.8.5 Stakeholders . 42
6.8.6 Relationships between the stakeholders . 44
6.8.7 Scenarios . 45
6.8.8 General requirements . 46
6.9 Transportation infrastructure planning . 46
6.9.1 Needs statement . 46
6.9.2 Objectives . 46
6.9.3 Current practices . 46
6.9.4 Gaps in the application . 47
6.9.5 Stakeholders . 47
6.9.6 Relationships between the stakeholders . 48
6.9.7 Scenarios . 49
6.9.8 General requirements . 49

– 4 – IEC SRD 63273-1:2023 © IEC 2023
6.10 Traffic management . 49
6.10.1 Needs statement . 49
6.10.2 Objectives . 49
6.10.3 Current practices . 49
6.10.4 Gaps in the application . 50
6.10.5 Stakeholders . 50
6.10.6 Relationships between the stakeholders . 51
6.10.7 Scenarios . 52
6.10.8 General requirements . 53
6.11 Water management . 53
6.11.1 Needs statement . 53
6.11.2 Objectives . 53
6.11.3 Current practices . 53
6.11.4 Gaps in the application . 54
6.11.5 Stakeholders . 54
6.11.6 Relationships between the stakeholders . 55
6.11.7 Scenarios . 56
6.11.8 General requirements . 57
6.12 Smart census project . 57
6.12.1 Needs statement . 57
6.12.2 Objectives . 57
6.12.3 Current practices . 58
6.12.4 Gaps in the application . 58
6.12.5 Stakeholders . 59
6.12.6 Relationships between the stakeholders . 59
6.12.7 Scenarios . 59
6.12.8 General requirements . 60
6.13 Underground pipeline management based on data lake . 60
6.13.1 Needs statement . 60
6.13.2 Objectives . 60
6.13.3 Current practices . 61
6.13.4 Gaps in the application . 61
6.13.5 Stakeholders . 61
6.13.6 Relationships between the stakeholders . 62
6.13.7 Scenarios . 63
6.13.8 General requirements . 63
6.14 Emergency management and rescue . 64
6.14.1 Needs statement . 64
6.14.2 Objectives . 64
6.14.3 Current practices . 64
6.14.4 Gaps in the application . 64
6.14.5 Stakeholders . 65
6.14.6 Relationships between the stakeholders . 66
6.14.7 Scenarios . 66
6.14.8 General requirements . 67
7 High level system analysis of city information modelling application areas . 67
7.1 City information modelling and the stakeholders in its applications . 67
7.2 High level system analysis of city information modelling application areas . 68

Annex A (informative) List of stakeholders and descriptions for city information
modelling use case collection and analysis . 69
Bibliography . 79

Figure 1 – City information modelling and its closely related components . 17
Figure 2 – Positioning city information modelling in new town planning . 20
Figure 3 – Positioning city information modelling in the 3D visualization of development

applications for public display and planning approvals . 24
Figure 4 – Positioning city information modelling in construction project approval
management . 28
Figure 5 – Positioning city information modelling in real estate registration
management . 36
Figure 6 – Positioning city information modelling in the city management via city brain . 39
Figure 7 – City brain for the city management . 40
Figure 8 – The architecture of city brain based on data lake . 40
Figure 9 – Positioning city information modelling in the city management via city brain . 41
Figure 10 – Positioning city information modelling in heritage preservation and

revitalization . 45
Figure 11 – Positioning city information modelling structure in traffic management . 52
Figure 12 – Positioning city information modelling structure in water management . 56
Figure 13 – Relationships between stakeholders when applying CIM in underground
pipeline management . 62
Figure 14 – Positioning city information modelling in urban underground pipeline
management . 63
Figure 15 – Relationships between stakeholders when applying CIM in emergency

management and rescue . 66

Table 1 – Mapping application areas of city information modelling and SDG 11 . 13

– 6 – IEC SRD 63273-1:2023 © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SMART CITY USE CASE COLLECTION AND ANALYSIS –
CITY INFORMATION MODELLING –
Part 1: High-level analysis
FOREWORD
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8) Attention is drawn to the Normative references cited in this publication. The use of the referenced publications is
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9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
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IEC SRD 63273-1 has been prepared by IEC systems committee Smart Cities: Electrotechnical
aspects of Smart Cities. It is a Systems Reference Deliverable.
The text of this Systems Reference Deliverable is based on the following documents:
Draft Report on voting
SyCSmartCities/290/DTS SyCSmartCities/299/RVDTS

Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Systems Reference Deliverable is English.

This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts in the IEC SRD 63273 series, published under the general title Smart city use
case collection and analysis – City information modelling, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.

– 8 – IEC SRD 63273-1:2023 © IEC 2023
INTRODUCTION
The IEC SRD 63273 series aims to scope out the requirements of city information modelling
standards by collecting and analysing its use cases. Specifically, the IEC SRD 63273 series
achieves the objectives of:
a) identifying the key application areas and stakeholders;
b) developing user stories and clarifying the relationship among these stakeholders;
c) collecting and analysing use cases of city information modelling; and
d) scoping out the requirements for city information modelling standards and providing
recommendations to IEC regarding urban planning and management.
In this document, application areas refer to the deployment-oriented categories that focus on
deploying city information modelling to fulfil a particular purpose.
The IEC SRD 63273 series provides useful information on understanding of city information
modelling for standardization committees in IEC and other standards development
organizations (SDOs) by:
1) promoting the collaboration and systems thinking regarding city information modelling
standards;
2) contributing multiple domain-specific use cases for smart cities; and
3) supporting IEC in fostering the development of standards in the field of electrotechnology
to help with the integration, interoperability, resiliency and effectiveness of city systems.
The IEC SRD 63273 series adopts a multi-step approach to generate and collect the use case
of city information modelling.
Step I – High-level analysis: The first step aims to generate the list of application areas of city
information modelling for a high-level analysis. Needs statements, objectives, current practices,
gaps, and scenarios (rationale for applying city information modelling in a specific application
area) are investigated for the description of each application area. In addition, the ecosystem,
which includes the list of stakeholders and the relationship among the stakeholders, is
examined in each application area before developing user stories and use cases.
Step II – User story: The second step aims to develop a list of significant user stories based on
the corresponding application area. In each corresponding area, one user story is generated
for one specific stakeholder which has been identified in Step I. Each user story follows the
same template, which includes one stakeholder (as a specific type of user), a specific situation
(when), a goal (I want to), and a reason (so that).
Step III – Use case: The third step aims to develop use cases for a specific application area
according to the list of user stories that have been generated in Step II. One user story in Step II
can be expanded to be at least one use case. The organization of use cases follows the IEC
short use case template (IEC TR 62559-1:2019, IEC 62559-2:2015 and IEC 62559-3:2017),
which includes the name of the use case, scope/objective, narrative and list of actors.
Step IV – Use case database establishment and integrative analysis: This step is to establish
the use case database of city information modelling and conduct integrative analysis of these
use cases.
Step V – City information modelling standard gaps and requirements: This last step is to identify
the standard gaps for city information modelling and requirements of the family of city
information modelling standards.

The IEC SRD 63273 series contains two parts:
• IEC SRD 63273-1, Smart city use case collection and analysis – City information
modelling – Part 1: High-level analysis
• IEC SRD 63273-2, Smart city use case collection and analysis – City information
modelling – Part 2: Use case analysis
The scopes of the two parts are defined below.
Part 1 explains how the work of city information modelling use case collection and analysis
address sustainable development goals, provides a brief overview of city information modelling,
and identifies the key application areas and stakeholders of city information modelling.
Part 2 develops the list of user stories and the database of use cases, conducts integrative
analysis of the use cases, scopes out the requirements of city information modelling standards
and provides recommendations for IEC and other standards development organizations (SDOs)
regarding urban planning and management.
In addition, according to the up-to-date understanding, urban digital twins are also used for
describing such technology and solution for smart cities. Urban digital twins indicate the digital
twins at the urban scale to enable transformation in how cities are planned, built and managed
to deliver better services to make the urban environment more liveable, inclusive, safe, resilient
and sustainable. Therefore, the application areas, stakeholders, user stories and use cases of
city information modelling, which are identified and developed in the IEC SRD 63273 series,
are also applied to urban digital twins to a great extent.

– 10 – IEC SRD 63273-1:2023 © IEC 2023
SMART CITY USE CASE COLLECTION AND ANALYSIS –
CITY INFORMATION MODELLING –
Part 1: High-level analysis
1 Scope
This part of IEC SRD 63273 explains how the work of city information modelling use case
collection and analysis address sustainable development goals, provides a brief overview of
city information modelling, identifies the key application areas of city information modelling, and
determines the stakeholders and the relationships among them in these application areas.
2 Normative references
There are no normative references in this document.
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
city information modelling
CIM
development of digital representations and simulations of a city made up of large quantities of
geospatial data, often including real-time data, which enable better city planning and
management
Note 1 to entry: The geospatial data are provided using an integration of building information modelling (BIM) and
geographic information systems (GIS).
Note 2 to entry: The real-time data are obtained through extensive use of IoT sensors within the city.
Note 3 to entry: City information modelling involves handling large amounts of big data, which are generally brought
together using cloud computing.
Note 4 to entry: Artificial intelligence is often used to generate and evaluate different scenarios using city
information modelling data to help manage the city better.
3.1.2
stakeholder
individual, team, organization (IEV 831-01-14), or classes thereof, having an interest in a
system (IEV 831-01-21)
Note 1 to entry: Usually a stakeholder can affect or is affected by the organization or the activity.
[SOURCE: IEC 60050-741:2020, 741-01-30, modified – The original Note 1 to entry has been
replaced.]
3.1.3
use case
specification of a set of actions performed by a system, which yields an observable result that
is, typically, of value for one or more actors or other stakeholders of the system
[SOURCE: ISO/IEC 19505-2:2012, 16.3.6]
3.1.4
geographic information system
GIS
information system dealing with information concerning phenomena associated with location
relative to the Earth
[SOURCE: ISO 19101-1:2014, 4.1.20]
3.1.5
building information modelling
BIM
use of a shared digital representation of a built object (including buildings, bridges, roads,
process plants, etc.) to facilitate design, construction and operation processes to form a reliable
basis for decisions
Note 1 to entry: The acronym BIM also stands for the shared digital representation of the physical and functional
characteristics of any construction works.
[SOURCE: ISO 29481-1:2016, 3.2]
3.1.6
Internet of Things
IoT
infrastructure of interconnected entities, people, systems and information resources
together with services which processes and reacts to information from the physical world
and virtual world
[SOURCE: IEC 60050-741:2020, 741-02-01]
3.1.7
big data
extensive datasets – primarily in the data characteristics of volume, variety, velocity, and/or
variability – that require a scalable technology for efficient storage, manipulation, management,
and analysis
Note 1 to entry: Big data is commonly used in many different ways, for example as the name of the scalable
technology used to handle big data extensive datasets.
[SOURCE: ISO/IEC 20546:2019, 3.1.2]
3.1.8
cloud computing
paradigm for enabling network access to a scalable and elastic pool of shareable physical or
virtual resources with self-service provisioning and administration on-demand
Note 1 to entry: Examples of resources include servers, operating systems, networks, software, applications, and
storage equipment.
[SOURCE: IEC 60050-741:2020, 741-01-07, modified – Note 1 to entry has been added.]

– 12 – IEC SRD 63273-1:2023 © IEC 2023
3.1.9
artificial intelligence
AI
research and development of mechanisms and applications of AI systems
Note 1 to entry: Research and development can take place across any number of fields such as computer science,
data science, humanities, mathematics and natural sciences.
[SOURCE: ISO/IEC 22989:2022, 3.1.3]
3.1.10
city model
appropriate set of data which models those physical and social aspects of the city that are
relevant for its objectives
[SOURCE: ISO ISO/IEC 30146:2019, 3.5]
3.1.11
spatiotemporal data
data representing a set of direct positions in space and time
3.1.12
application
set of technologies deployed to fulfil a particular purpose
[IEC 60050-741:2020, 741-01-02, modified – In the definition, "software designed" has been
replaced by "set of technologies deployed".]
3.2 Abbreviated terms
2D two dimensional
3D three dimensional
AI artificial intelligence
BIM building information modelling
ANPR automatic number-plate recognition
CIM city information modelling
GIS geographic information system
IoT Internet of Things
ITS intelligent transport system
SDGs Sustainable Development Goals
SDOs standards development organizations

4 Contributing to Sustainable Development Goals
4.1 General
The United Nations published 17 Sustainable Development Goals (SDGs) to enhance world
peace and prosperity, eradicate hunger and poverty, and protect people and the planet by 2030.
It calls for innovation and broad collaboration between public and private society. The
IEC SRD 63273 series mainly addresses SDG 11 (Goal 11): sustainable cities and communities.

4.2 Mapping application areas of city information modelling and SDG 11
Goal 11 aims to make cities and human settlements inclusive, safe, resilient and sustainable.
Specifically, Goal 11 includes ten targets:
11.1 safe and affordable housing;
11.2 affordable, accessible and sustainable transport systems;
11.3 inclusive and sustainable urbanization;
11.4 protect and safeguard the world's cultural and natural heritage;
11.5 reduce the adverse effects of natural disasters;
11.6 reduce the environmental impact of cities;
11.7 provide universal access to safe and inclusive green and public spaces;
11.a a strong national and regional development planning;
11.b implement policies for inclusion, resource efficiency and disaster risk reduction; and
11.c support least developed countries in sustainable and resilient building.
The CIM application areas studied in this document address the full list of targets in Goal 11
(Table 1). One application domain can address more than one target. For example, the
application area of new town planning addresses 11.3 inclusive and sustainable urbanization,
11.7 provide access to safe and inclusive green and public spaces, and 11.a strong national
and regional development planning.
Table 1 – Mapping application areas of city information modelling and SDG 11
CIM application Connections between SDG 11 and
SDG 11 target Contents
areas the application areas
11.1 Safe and By 2030, ensure access • three dimensional All these CIM application areas are
affordable for all to adequate, safe visualization of relevant to the whole life cycle of
housing and affordable housing property and land construction for housing, which also
and basic services and administration includes the civil services for the
upgrade slums. housing, such as underground
• Construction
pipeline and water management. By
project approval
adopting CIM in housing constructions
management
and management, the cities are able
to manage the land use and provide
• Project
more safe and affordable housing.
management
during
construction
• Real estate
registration
management
• Underground
pipeline
management
• Water
management
11.2 Affordable, By 2030, provide • Transport These two CIM application areas
accessible access to safe, infrastructure provide the description of how CIM
and affordable, accessible planning can be applied in transportation
sustainable and sustainable infrastructure planning and traffic
• Traffic
transport transport systems for management. Both of them enable the
management
systems all, improving road city to develop an affordable and
safety, notably by sustainable transport system.
expanding public
transport, with special
attention to the needs
of those in vulnerable
situations, women,
children, persons with
disabilities and older
persons.
– 14 – IEC SRD 63273-1:2023 © IEC 2023
CIM application Connections between SDG 11 and
SDG 11 target Contents
areas the application areas
11.3 Inclusive and By 2030, enhance • New town The CIM application areas of smart
sustainable inclusive and planning census project can help us understand
urbanization sustainable the population in the cities by using an
• Smart census
urbanization and efficient and low-cost approach. The
project
capacity for data can be used for the sustainable
participatory, integrated human settlement planning through a
and sustainable human comprehensive understanding of the
settlement planning and different population groups in the
management in all communities. New town planning is
countries. usually triggered by the urbanization
(especially rural to urban), which has
become an important agenda for
sustainable urban development in all
countries.
11.4 Protect and Strengthen efforts to • Heritage The CIM application area of heritage
safeguard the protect and safeguard preservation and preservation and revitalization
world's the world's cultural and revitalization addresses the importance of applying
cultural and natural heritage. digital technologies to protect and
natural safeguard the heritages in cities.
heritage
11.5 Reduce the By 2030, significantly • City management The CIM application area of city
adverse reduce the number of using city brain management using city brain provides
effects of deaths and the number the different scenarios of using big
• Emergency
natural of people affected and data, joint data hub, IoT, cloud
management and
disasters substantially decrease computing to manage the ci
...