ISO 20077-2:2018

INTERNATIONAL ISO
STANDARD 20077-2
First edition
2018-01
Road Vehicles — Extended vehicle
(ExVe) methodology —
Part 2:
Methodology for designing the
extended vehicle
Véhicules routiers — Méthodologie du véhicule étendu (ExVe) —
Partie 2: Méthodologie pour désigner le véhicule étendu
Reference number
©
ISO 2018
© ISO 2018
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ii © ISO 2018 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 2
5 Conventions for identifying rules and basic principles and for specifying their content .3
6 Overview of the design methodology of the extended vehicle . 3
6.1 Role of the design methodology in the design process of an extended vehicle . 3
6.2 The ExVe design methodology content . 4
6.3 Consideration of new ExVe functionalities . 5
7 ExVe design methodology — Rules . 6
7.1 General . 6
7.2 Safety related rule . 6
7.3 Security related rule . 7
8 ExVe Design Methodology — Basic principles . 7
8.1 General . 7
8.2 General basic principles . 8
8.3 Basic principles related to life-cycle (e.g. assembly, customer use) . 8
8.4 Basic principle related to remote access . 9
8.5 Basic principle related to the existing design of an extended vehicle .10
8.6 Basic principle related to interactions and management of priorities between the
ExVe functionalities .12
8.7 Basic principle related to non-regression and availability of resources .12
8.8 Basic principle related to validation of the ExVe functionality .14
8.9 Basic principles related to non-monitoring .14
9 ExVe design methodology — Templates .14
9.1 General .14
9.2 Template for technical request.15
9.3 Template for technical response .16
Annex A (normative) Template for technical request .19
Annex B (normative) Template for technical response .20
Bibliography .21
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 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
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 on 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 the following
URL: www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee is ISO/TC 22 Road vehicles, Subcommittee SC 31,
Data communication.
A list of all parts in the ISO 20077 series can be found on the ISO website.
iv © ISO 2018 – All rights reserved

Introduction
This document is dedicated to the extended vehicle (ExVe).
In the early 2010s, advances in technology have led to new ways of communicating with the vehicle
where digital information could be accessed not only in a physical way, but also wirelessly.
The removal of the constraint of a physical connection has enabled
— remote access to vehicle functionality that previously was impossible or very difficult, and
— simplified access to multiple information sources which have together created opportunities for
new functionalities.
These advances have generated an increased need for interconnection with data specific to each
vehicle. This phenomenon was similar to the increase of new functionalities enabled by the usage of
multiplexed buses in vehicles.
This evolution has led to the introduction of the “extended vehicle” (ExVe) concept as described in
ISO 20077-1.
Technical constraints and societal needs should be taken into account when designing these new
functionalities. It is also necessary to mitigate the risks introduced by the new communication means
between the ExVe and the external world.
In this context, this document aims at guiding the ExVe manufacturer by specifying a set of general
rules and basic principles from which each ExVe manufacturer derives their own detailed and specific
methods or procedures to design an extended vehicle.
INTERNATIONAL STANDARD ISO 20077-2:2018(E)
Road Vehicles — Extended vehicle (ExVe) methodology —
Part 2:
Methodology for designing the extended vehicle
1 Scope
This document specifies general rules and basic principles the manufacturer of the extended vehicle
(ExVe) considers when elaborating its own design method. It does not specify the manner in which
these design methods are drafted and implemented.
It specifies by means of a template the necessary information that is communicated to the ExVe
manufacturer for requesting the design of a new ExVe functionality. It also specifies, by means of a
template, the information the ExVe manufacturer provides for responding to that request. It does not
specify the process leading to the elaboration of the request information nor the process associated to
communication of the response information.
It concerns the design of the extended vehicles mentioned in the scope of ISO 20077-1, regardless of the
type of communication interface which is used between the ExVe and external systems or parties. It
does not concern the internal communication of the ExVe. It does not standardize the implementation
of software or hardware nor preclude any technical solution the ExVe manufacturer might select when
designing a new ExVe functionality.
It relates to the design and production phases of a vehicle, where these phases include the subsequent
design upgrades by the ExVe manufacturer of vehicle models, variants, or types still in production.
NOTE Should new interfaces for remote communication with the vehicle become mandatory, then this
document is also applicable for designing the requested ExVe functionalities.
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 20077-1, Road vehicles — Extended vehicle (ExVe) — Methodology — Part 1: General information
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 20077-1 and the following 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
basic principle
design principle that is considered when designing an extended vehicle
3.2
life cycle
various situations that the vehicle will encounter during its whole life including manufacture,
customer’s use, maintenance and recycling
3.3
local diagnostic facilitator
person at the vehicle that is in communication with the remote technician and facilitates the diagnostics
by that person’s capacity to act as requested by the remote technician and to answer the remote
technician’s questions
Note 1 to entry: Any person not able, at the minimum, to understand or describe the indications of the on-board
instruments and tell-tales shall not be considered as local diagnostic facilitator.
3.4
operator
person at the vehicle who is operating, controlling or working on an extended vehicle
EXAMPLE The local diagnostic facilitator.
3.5
requester
company or legal entity who is submitting to an ExVe manufacturer a request for a new ExVe
functionality in the ExVe
Note 1 to entry: When submitting a request, a vehicle manufacturer acting as an after-sales service provider
shall be considered as a requester.
Note 2 to entry: When the vehicle manufacturer is the same as the ExVe manufacturer, they may use their own
internal processes.
3.6
rule
fundamental design requirement that is complied with when designing an extended vehicle
4 Abbreviated terms
BP Basic Principle
ECU Electronic Control Unit
ExVe Extended Vehicle
LDF Local Diagnostic Facilitator
NUM rule or BP number
R Rule
VER Version of rule or BP numb
...