ISO/TR 4286:2021

Intelligent transport systems - Use cases for sharing of probe data

This document describes various use cases for the sharing of probe vehicle data as a common platform for smart city instantiation. When modernizing a city towards a smart city, it is necessary for information flows across various fields, such as transportation, healthcare, energy, water and other government services, to be effectively managed and shared. Despite efforts from many cities, integrating all databases related to all services has proven to be a cumbersome task. One challenge is the lack of a systematic way that can be modelled for data sharing. The ITS data sharing model for vehicle probe data can serve as the basis for instigating this type of work. To elaborate how vehicle probe data work can be applied to achieve this objective, this document: - gathers use cases and examples of vehicle probe data sharing around the world, and - provides use cases for data sharing that are appropriate for smart city ITS mobility solutions. By examining these use cases and current and planned data sharing practices around the world, this document demonstrates how this mechanism can help implement many smart city applications. This document also shows that by combining the vehicle probe data with roadside sensor data, and other important public and private data sources, the services can be operated more effectively. Data collection methods and data or information provisioning are beyond the scope this document. Specifically, this document does not describe items related to the vehicle probe data collection nor the vehicle probe data provision activities as specified by other existing standards such as ISO 19414.

Systèmes de transport intelligents — Cas d'usages pour le partage des données de sondage

General Information

• Status: Published
• Publication Date: 17-Aug-2021
• ICS: 03.220.01 - Transport in general
• ICS: 35.240.60 - IT applications in transport
• Technical Committee: ISO/TC 204 - Intelligent transport systems
• Drafting Committee: ISO/TC 204/WG 16 - Communications
• Current Stage: 6060 - International Standard published
• Start Date: 18-Aug-2021
• Completion Date: 18-Aug-2021

Overview

ISO/TR 4286:2021 - Intelligent transport systems - Use cases for sharing of probe data - describes how vehicle probe data can be shared and reused as a common platform to support smart city services. The technical report gathers global use cases and provides a conceptual framework showing how probe vehicle data, combined with roadside sensors and other public/private data sources, can improve ITS mobility solutions. The document focuses on data sharing models and service-level use cases; it does not specify data collection or provisioning methods (those are covered by other standards).

Key topics

• Conceptual framework for vehicle probe system data sharing: reference architecture showing relationships between vehicles (including CAV), service providers and road authorities and the role of a common database.
• Benefits of data sharing: improved service quality, cross-application reuse, and enabling new ITS and smart city services.
• Data sharing function model: how shared probe data can be combined and processed across stakeholders to create new application services.
• Metadata, storage and access: considerations for organizing, storing and making probe data discoverable and usable across services.
• Data ownership, IPR and privacy: discussion of legal, commercial and personal data protection issues relevant to probe data sharing.
• Applicability of distribution technologies: high-level review of data distribution approaches suited to shared ITS data (independent of specific communication media).
• Challenges and interoperability: practical obstacles when integrating heterogeneous probe systems and legacy databases; role of data transformation at common repositories.
• Service domains and detailed use cases: service categories such as infrastructure operation management, traffic management, road traffic management and enforcement, with annexed country examples (Japan, Australia, Singapore, US, China, Korea).

Applications

ISO/TR 4286:2021 supports practical deployments where shared probe data accelerate smart city mobility and ITS services:

• Real-time traffic monitoring and congestion management
• Infrastructure operations and maintenance planning
• Integration of CAV data into urban mobility platforms
• Cross-sector services combining transport data with energy, water or health systems
• Enhanced traveler information and safety alerting

Who should use this standard

• Municipal and road authorities planning smart city ITS architectures
• ITS service providers and platform operators designing probe-data databases
• CAV manufacturers and telematics providers considering data exchange models
• Urban planners, mobility integrators and policymakers assessing data governance and privacy implications
• Researchers and system architects evaluating probe-data reuse and interoperability

Related standards

• ISO 22837 (vehicle probe data for wide area communications)
• ISO 19414 (service architecture of probe vehicle systems) - note: data collection/provisioning described elsewhere
• ISO 24100 (personal data protection for probe services)
• ISO 14812 (ITS vocabulary) and related ITS station and LDM standards (e.g., ISO 21217, ISO/TS 18750)

ISO/TR 4286:2021 is a practical resource for organizations seeking to deploy interoperable, privacy-aware probe data sharing solutions that underpin smart city mobility services.

Standards Content (Sample)

TECHNICAL ISO/TR
REPORT 4286
First edition
2021-08
Intelligent transport systems — Use
cases for sharing of probe data
Systèmes de transport intelligents — Cas d'usages pour le partage des
données de sondage
Reference number
©
ISO 2021
© ISO 2021
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
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Phone: [phone]
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Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Use cases for the probe vehicle systems data sharing framework .2
4.1 The conceptual framework for vehicle probe system data sharing . 2
4.2 Concept of data sharing of vehicle probe data. 3
4.3 Probe data sharing benefits . 4
4.3.1 Introduction . 4
4.3.2 Benefits of data sharing . 4
4.3.3 Model of data sharing function . 5
4.3.4 Standards. 5
4.3.5 Applicability of data distribution technologies . 5
4.3.6 Metadata . 5
4.3.7 Storage and access . 5
4.3.8 Data ownership and IPR . 5
4.3.9 Challenges . 6
5 Definition of service domains utilizing shared probe data . 6
5.1 General . 6
5.2 Referenced target use cases . 6
5.2.1 General. 6
5.2.2 Infrastructure operation management . 8
5.2.3 Traffic Management . 9
5.2.4 Road traffic management . 9
5.2.5 Enforcement .10
5.2.6 The role of service providers .11
6 Data sharing use cases .15
Annex A (informative) Japan use case .16
Annex B (informative) Australia use case .17
Annex C (informative) Singapore use case .18
Annex D (informative) US use cases .19
Annex E (informative) China use case .20
Annex F (informative) Korea use case .21
Bibliography .22
Foreword
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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
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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
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
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on the ISO list of patent declarations received (see www .iso .org/ patents).
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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 © ISO 2021 – All rights reserved

Introduction
When discussing transportation systems, much attention has been paid to safety, comfort, impacts on
the environment and energy efficiency. The use of probe data (specified in ISO 22837) is a key factor in
dealing with the above issues.
Probe vehicle data are collected through various vehicles in an ITS system, but the data are typically
used only for a specific application by the service provider. To boost efficiency, it is recommended that
the vehicle probe data be shared by various service applications through common databases.
Current probe vehicle systems collect and use data, but do not share data with other ITS service
applications. Vehicle probe data are valuable for all related services and limiting the use of such data
to within one service only ought to be avoided for efficient data use. Sharing probe data among service
providers enhances quality of service, as the probe data collected through the sensors and other
sources can be utilized by other service providers.
As an example, shared common database can be used for new services, such as an advanced notification
safety information provision service, by utilizing roadside sensor data collected by a road authority.
Many other new services can be added as the number of CAV (connected and automated vehicle)
increases.
This document describes probe data sharing use cases so that additional service can be developed by
sharing probe data collected by various probe vehicle systems.
The functionalities of a probe vehicle system (PVS) can be implemented in an ITS station unit according
to ISO 21217 and support application protocols specified in other standards. Examples of such protocols
are the local dynamic map (LDM) specified in ISO/TS 18750, and generic ITS station facilities layer
services specified in ISO/TS 17429. The service architecture classifies ITS services including PVS, and
this classification also defines service domains for cooperation between PVSs.
It is noted that this document does not prescribe a physical communication medium for transmitting
data/information to or from vehicles. This document is intended to be independent of any communication
medium and to be compatible with any medium that is selected by the system developers.
In addition, this document focuses only on the framework for vehicle probe data sharing use cases.
TECHNICAL REPORT ISO/TR 4286:2021(E)
Intelligent transport systems — Use cases for sharing of
probe data
1 Scope
This document describes various use cases for the sharing of probe vehicle data as a common
platform for smart city instantiation. When modernizing a city towards a smart city, it is necessary
for information flows across various fields, such as transportation, healthcare, energy, water and
other government services, to be effectively managed and shared. Despite efforts from many cities,
integrating all databases related to all services has proven to be a cumbersome task. One challenge
is the lack of a systematic way that can be modelled for data sharing. The ITS data sharing model for
vehicle probe data can serve as the basis for instigating this type of work. To elaborate how vehicle
probe data work can be applied to achieve this objective, this document:
— gathers use cases and examples of vehicle probe data sharing around the world, and
— provides use cases for data sharing that are appropriate for smart city ITS mobility solutions.
By examining these use cases and current and planned data sharing practices around the world, this
document demonstrates how this mechanism can help implement many smart city applications.
This document also shows that by combining the vehicle probe data with roadside sensor data, and
other important public and private data sources, the services can be operated more effectively.
Data collection methods and data or information provisioning are beyond the scope this document.
Specifically, this document does not describe items related to the vehicle probe data collection nor the
vehicle probe data provision activities as specified by other existing standards such as ISO 19414.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
1)
ISO 14812:— , Intelligent transport systems — Vocabulary
ISO 19414, Intelligent transport systems — Service architecture of probe vehicle systems
ISO 22837, Vehicle probe data for wide area communications
ISO 24100, Intelligent transport systems — Basic principles for personal data protection in probe vehicle
information services
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 14812, ISO 19414, ISO 22837,
ISO 24100 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
1) Under preparation. Stage at the time of publication: ISO/DTS 14812:2021.
3.1
data sharing
activity between two or more service providers where the data can be combined and processed to
create data for new application services
4 Use cases for the probe vehicle systems data sharing framework
4.1 The conceptual framework for vehicle probe system data sharing
Various probe data systems are deployed and successfully operated by service providers independently.
However, most likely, the vehicle probe data collected by one ITS systems can only be used for a
specific application by the service provider and are not shared among other applications. In exploiting
applications and services for a smart city, such data cannot be used effectively, for the purpose of
solving smart city mobility issues, for example. Part of the issue is that the service providers often work
in their own specific application silos and fail to see the value of data sharing from a holistic viewpoint.
It is recommended that the vehicle probe data be shared among stakeholders; this sharing could
support various potential fields of services for smart city service applications via a common database.
Ideally, all the data in each application supporting a smart city ought to be exchanged through all
fields of services with a common format. However, this is not feasible as most of the vehicle probe data
systems in place are deployed at different times and provided by different vendors. In the case of the
probe vehicle system, for example, aside from the data gathered from certain applications or services
which do follow a set of standards, most of the data collected requires transformation or conversion to
ensure data interoperability. From a data access efficiency viewpoint, the best place to implement these
data conversions is at the common database.
Although data interoperability is essential when adopting the common database for probe data, data
ownership and privacy protection need to be taken into consideration as high priority issues. Probe
data might need to be gathered from sources applying proprietary means. Some service providers can
consider that such data bear much value and can be reluctant to grant the access to those data freely.
Furthermore, some probe data can be associated with an individual and needs to be specially protected
according to personal privacy protection regulations.
This document describes useful use cases for sharing vehicle probe data and provides useful examples
currently used and planned around the world. This document provides role model descriptions of data
sharing only, and does not cover data collection, nor data provision.
The conceptual framework of the vehicle probe system, as shown in Figure 1 below, depicts the relations
among stakeholders, such as a service provider, vehicles including connected and automated vehicles
(CAV), roadside systems and the roadside operation authorities. The key is to have a common database
so that all the service data, regardless of their origins can be fed and stored in the common database.
Since the implementation of such a framework for probe data systems can vary, the framework depicted
in Figure 1 is for reference only and cannot include all the stakeholders and outlines of their roles.
2 © ISO 2021 – All rights reserved

Figure 1 — Reference vehicle probe system framework
As shown in Figure 1, the service provider, through the pre-provision process, requests vehicle data from
a vehicle and the vehicle provides vehicle data to the service provider accordingly. The service provider
stores data into the database and executes application services with the support of the database, and the
processed information of those services are provided back to the vehicle. Likewise, the service provider
can exchange information with road authorities. In some cases, the service provider can collect probe
data from the vehicle through a road authority. In such a case, the vehicle data are collected by roadside
sensors and passed to the road authority. Data collected through other roadside sensors can also be
collected by the road authority. The road authority can then aggregate those data and send them to the
service provider. In return, the service provider can provide the processed valuable information to the
road authority.
4.2 Concept of data sharing of vehicle probe data
Although a common database can help the service provider improve its operational efficiency in its
service realm, the real benefit to a probe vehicle system can be further amplified only if multiple probe
databases in the probe vehicle system are also shared. Figure 2 provides a conceptual view of how
multiple databases are shared in a probe vehicle system. The databases shown on the left are the ones
associated with each service provider, such as probe service and other services.
NOTE 1 Service provider A database has vehicle probe data as per ISO 19414.
NOTE 2 Service provider B database has vehicle probe data from commercial vehicle of TARV as per ISO 15638.
NOTE 3 Service provider C database has public transport data as per ISO 17185.
NOTE 4 Service provider D database has traffic management centre data as per ISO/TS 19468.
Figure 2 — The conceptual view of data sharing in a vehicle probe system
The data from TMC (traffic management centre) in Figure 2 includes examples of currently available
road authority's traffic data.
Sharing probe data among current service providers and additional service providers enables the
creation and realization of additional new application services.
ISO/TS 21177 and ISO/TS 21184 cover secured access to sensor and control networks of ITS stations
in general. A standardized data format based on standardized data types is specified to enable data
exchange between ITS stations and ITS applications. Secure certificate-based Access Control is specified
in ISO/TS 21177, combined with ISO/TS 21184 using configuration data. Required data models are
specified in ISO/TS 21184.
4.3 Probe data sharing benefits
4.3.1 Introduction
The observations detailed in the following subclauses can be derived through probe data sharing.
4.3.2 Benefits of data sharing
Through the shared common database, where maintenance service is maintained as an advanced
service and various functions including the Internet connection can be used, the opportunity to use the
4 © ISO 2021 – All rights reserved

data sharing function has become a common use case for smart city solutions. The merit of this data
sharing function can be summarized into the following two points:
a) Easy exchange of data — Data can be converted into common data format and exchanged quickly
and reliably without going through the store and distribute processes. In addition, it is possible to
apply various security settings, such as setting access rights for the users for each data element,
which can enhance data security.
b) Simple management of data — As data can be managed centrally, data management is simplified. In
addition, there can be minimum time lag while updating the data.
4.3.3 Model of data sharing function
To use the data sharing function among service providers, it is required to set up users and user groups
according to the role of the users and the controlled accessible data.
As shown in Figure 3, users often have multiple roles, and consideration needs to be given to the
grouping method and security setting.
Figure 3 — Multiple roles of users (service providers)
4.3.4 Standards
Existing probe data standards and sharing policy standards already defined by the local authority can
be utilized.
4.3.5 Applicability of data distribution technologies
ISO/TR 23255 can be used as reference document.
4.3.6 Metadata
Metadata sharing policies already defined by the local authority can be utilized.
4.3.7 Storage and access
General storage and access to shared data integration already defined by the local authority can be
utilized.
4.3.8 Data ownership and IPR
Clear guidelines already defined by the local authority can be utilized for identifying data ownership
and licencing, including IPR, of probe data, supporting data and processing tools.
4.3.9 Challenges
There are several challenges which need to be analysed and solved when deploying probe data sharing
among multiple service provider entities:
— It is important to define the rules regarding data storage to respect data privacy.
— The entity in charge of maintaining and processing the collected probe vehicle data and its liability
need to be defined.
— The governance rules for such an entity need to be defined.
— Decision-making on the policy needs to be done, whether it is a centralized entity framework or a
cloud framework that can be completed through multiple decentralized entities.
5 Definition of service domains utilizing shared probe data
5.1 General
Sharing of probe vehicle data among current service providers and additional service providers can
support the implementation of new service applications needed for smart city services. For example,
data sharing could eventually be implemented to satisfy infrastructure assessment needs and to
improve safety within cities.
Possible service applications can include:
— critical safety information provision,
— safety driving support,
— infrastructure planning,
— dynamic traffic management,
— traffic rule enforcement,
— dynamic map updates, and
— emergency evacuation support.
Where applicable, probe data sharing definitions already defined by the local authority can be utilized.
For deployment, further research or development of data sharing is recommended.
5.2 Referenced target use cases
5.2.1 General
ITS service applications largely rely upon the big data collected through the applications and services of
a smart city that are held and maintained by a smart city data management entity. Those ITS services
can be grouped into two categories: the services provided by jurisdiction or the road operator; and
the services by the public and private service providers. The applications offered and managed by
the jurisdiction or the road operator can be classified in four groups as “infrastructure operation
management”, “traffic management”, “road traffic operation management” and “enforcement”. The
applications provided by the service providers can be offered through public or private sectors. The
classification of an ITS service and applications can be shown in Figure 4.
6 © ISO 2021 – All rights reserved

Figure 4 — Classification of smart city ITS service and its applications
Numerous emerging ITS service applications for smart city deployment have been growing rapidly in
recent years. The following list provides examples of those applications:
— Traffic management applications to ease traffic congestion and maintain safety in urban areas
— Road traffic operation applications to realize efficient and safer use of infrastructure
— EFC support for Urban-ITS traffic management to realize dynamic road pricing
— Weigh in motion to ease heavy goods transport vehicles
— Dangerous goods/hazardous materials transport management to enforce geo-fencing
— Disaster information provisioning systems for safer and more timely evacuation activities
— Infrastructure services applications for efficient and automated maintenance works
— Access control in urban areas to control vehicle entry to certain areas
— Traffic signal (SPaT-MAP): signal
...