Foreword
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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).
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The committee responsible for this document is ISO/TC 204, Intelligent transport.
This first edition cancels and replaces ISO/TS 17427:2014 which has been technically revised.
A list of all the parts in the ISO 17427 series can be found on the ISO website.
Introduction
Cooperative Intelligent Transport Systems (C-ITS) (3.8) are a promising advancement of Intelligent Transport Systems (ITS). Numerous applications, made possible only, or most efficiently, by the cooperation of actors (3.2) (other vehicles, the infrastructure (3.12), service (3.25) providers, even bystanders), are being devised that open up new possibilities to make traffic safer, more efficient and smarter. Technologies are being developed and improved to realize and support those new services and applications (3.3). But, to finally implement C-ITS and to achieve the benefits of greater safety and better mobility, multiple actors will have to cooperate with each other in a completely new way. Actors that have to date worked in isolation, i.e. in so called “silos”, will have to find a way to achieve these possibilities. New actors may also be required for the provision of some services. This requires a clear definition and assignment of behaviours (3.4), responsibilities (3.21) and liabilities. Therefore a general, abstract organizational architecture with the description of the single roles (3.22), their behaviour, and the corresponding responsibilities, is an essential prerequisite for the deployment of C-ITS.
The organizational relationships with the description of roles and responsibilities, is a crucial part of the whole C-ITS architecture. C-ITS is not an objective in itself, it is a means to achieve the potential of service provision through the cooperation of actors involved in the ITS sector. The architectural viewpoint comprising the organizational architecture has extensive influences on the deployment and implementation of C-ITS.
This document describes the high level roles and responsibilities of a C-ITS service provider and aligns it with other C-ITS standards and specifications.
1   Scope
This document contains a detailed description of the (actor invariant) roles (3.22) and responsibilities (3.21) required to deploy and operate Cooperative-ITS (C-ITS) (3.8). The organization/organization of actors / roles described in this document are designed to be appropriate for any fully operational system that uses the C-ITS concepts and techniques in order to achieve its service provision. This document is presented in terms of an organizational or enterprise viewpoint (3.10) as defined in ISO/IEC 10746-1.
This document is for all types of road traffic of all classes, and for any other actors involved in the provision of applications and services which use C-ITS techniques to achieve service provision. The description of roles is technology agnostic and, in terms of C-ITS, agnostic in respect of communication modes and embraces vehicle-vehicle communications, vehicle-infrastructure communications and infrastructure-infrastructure communications.
This document provides a methodology for the identification of service specific roles and their corresponding responsibilities based on a process oriented approach. Additionally, the methodology is used to identify the roles and responsibilities for C-ITS in general. Both the methodology as well as the roles and responsibilities for C-ITS are deduced from ISO/IEC 10746-1, ISO/IEC 10746-2, ISO/IEC 10746-3, the reference model of Open Distributed Processing. Open Distributed Processing offers five viewpoints of which the enterprise viewpoint corresponds with the organizational architecture and its roles and responsibilities.
To limit the scope of the document to the core of C-ITS, the roles are separated into external and internal. Considered to be internal are all roles that are highly relevant for the purpose of achieving service provision by means of C-ITS. Considered to be external are all roles involved in C-ITS, but not set up only for the purpose of C-ITS.
This document provides a description of a high-level architectural viewpoint on C-ITS. It is designed to be used as a blueprint when implementing service provision systems that use C-ITS, and the corresponding organizational structures. The characteristics of C-ITS entail a huge number of data/ information exchanges. Therefore the implementation stringently respects privacy and data protection as it is defined in ISO/TR 12859 and in national laws and regulations (where instantiated). Privacy and data protection affects all roles defined in this document due to these characteristics and all actors occupying roles in C-ITS respects the corresponding standards and regulations.
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.
ISO/TR 12859:2009, Intelligent transport systems — System architecture — Privacy aspects in ITS standards and systems
ISO 14817-2, Intelligent transport systems — ITS central data dictionaries — Part 2: Governance of the Central ITS Data Concept Registry
3   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 https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
action
something which happens; the fact or process (3.18) of doing something
EXAMPLE:Typically to achieve an aim.
[SOURCE:ISO/IEC 10746‑2, 8.3]
3.2
actor
person or organizational unit playing a coherent set of roles (3.22) when interacting with the system within a particular use case
[SOURCE:ISO 24014‑1:2015, 2.2]
3.3
application
app
software based mechanism of delivering some or all parts of a service (3.25)
[SOURCE:ISO 14813‑1, 3.2]
3.4
behaviour
collection of actions (3.1) with a set of constraints on when they may occur
[SOURCE:ISO/IEC 10746‑2, 8.7]
3.5
bounded secure managed domain
BSMD
ITS-S (3.15)application (3.3)processes (3.18) which function within a controlled environment comprised of an ITS-S facilities layer, ITS-S networking & transport layer, ITS-S access layer, ITS-S management entity and ITS-S security entity, which adhere to a minimum set of security principles and procedures so as to establish a level of trust between itself and other similar ITS stations (3.15) with which it communicates
3.6
client
party which instigates/authorizes the provision of an ITS service (3.14)
3.7
community
configuration of objects (3.17) formed to meet an objective
[SOURCE:ISO 10746‑3, 5.1.1]
3.8
Cooperative-ITS
C-ITS
subset of overall ITS that communicates and shares information between ITS stations (3.15) to provide, exchange, or receive, data, give advice or facilitate actions with the objective of improving safety, sustainability, efficiency and comfort beyond the scope of stand-alone systems
Note 1 to entry: As an alternative to a “subset”, Cooperative-ITS could be viewed as a “paradigm” in overall ITS.
[SOURCE:ISO/TR 17465‑1, 2.1]
3.9
enterprise object
object (3.17) in enterprise viewpoint (3.10)
3.10
enterprise viewpoint
viewpoint on an open distributed processing (ODP) system and its environment that focuses on the purpose, scope and policies for that system
[SOURCE:ISO/IEC 10746‑3, 4.1.1.1]
3.11
external enterprise object
enterprise object (3.9) involved in C-ITS but not set up for the only purpose of C-ITS
3.12
infrastructure
system of facilities, equipment and services (3.25) needed for the operation of an organization
Note 1 to entry: C-ITS specific: static part of C-ITS incorporating sensors, actuators, static ITS Station(s) (3.15).
[SOURCE:ISO 9000:2015, 3.5.2]
3.13
internal enterprise object
enterprise object (3.9) within C-ITS set up only as an internal C-ITS mechanism to enable or support the provision of an ITS service (3.14) via C-ITS
3.14
ITS service
provides benefits to its service recipient (3.28)
3.15
ITS Station
ITS-S
entity in a communication network, comprised of applications (3.3), facilities, networking and access layer components that operate using regular wireless communications interface security, or may operate within a bounded secure management domain (3.5)
3.16
data lifecycle process
process (3.18) based on data element transformation
3.17
object
model of an entity, characterized by its behaviour (3.4) and dually by its state, distinct from any other object, encapsulated, i.e. any change in its state can only occur as a result of an internal action (3.1) or as a result of an interaction with its environment
[SOURCE:ISO/IEC 10746‑2, 8.1]
3.18
process
sequence of tasks (3.32) or set of interrelated tasks which transform inputs into outputs
[SOURCE:ISO 9000:2015, 3.4.1]
3.19
process chain
sequence of processes (3.18) that wait in the background for an event, with some of these processes triggering a separate event that can start other processes in turn
[SOURCE:SAP Help Portal]
3.20
public key infrastructure
PKI
hierarchy of “certification authorities” to allow individuals and organizations to identify each other for the purpose of doing business electronically
3.21
responsible
responsibility
responsibilities
state of being accountable or answerable, as for an entity, function, system, security service or obligation
Note 1 to entry: A responsibility might be a legally backed assignment of actions (3.1) to a role (3.22).
3.22
role
described by tasks (3.32), a behaviour (3.4) and responsibilities (3.21) and to be associated with an actor
3.23
scenario
general description of activities between (possible) participating actors (3.2)
3.24
sequential process
process (3.18) based on sequence of actions (3.1) executed
3.25
service
defined functionality to the system which requires a defined set of data as input, processes this data and delivers a defined output
3.26
service in pull mode
ITS service (3.14) actively requesting the data that is required for the service operation
3.27
service in push mode
ITS service (3.14) operating on data delivered without request by an actor or its system
3.28
service recipient
user
actor (3.2) who receives a service (3.25)
3.29
stakeholder
individual or organisation having a right, share, claim or interest in a system or in its possession of characteristics that meet their needs and expectations
3.30
sub-role
subordinate role (3.22) consisting of a defined fragment of the superior role (3.22)
3.31
system
set of interacting or interdependent components forming an integrated whole
Note 1 to entry: Every system is delineated by its organizational and/or spatial and/or temporal boundaries, surrounded and influenced by its environment, described by its structure and purpose and expressed in its functioning.

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