ISO 18682:2016

DRAFT INTERNATIONAL STANDARD
ISO/DIS 18682
ISO/TC 204 Secretariat: ANSI
Voting begins on: Voting terminates on:
2015-09-01 2015-12-01
Intelligent transport systems — External hazard detection
and notification systems — Basic requirements
Titre manque
ICS: 03.220.01; 35.240.60
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ISO/DIS 18682:2015(E)
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PROVIDE SUPPORTING DOCUMENTATION. ISO 2015

ISO/DIS 18682:2015(E)
© ISO 2015, Published in Switzerland
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ii © ISO 2015 – All rights reserved

ISO/DIS 18682
Contents Page
Foreword . v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 External hazard detection and notification systems . 2
4.1 General . 2
4.2 Categories of hazard notification . 2
4.3 Types of external hazard detection and notification system . 2
4.4 Functional configuration . 3
4.4.1 Basis of functional configuration . 3
4.4.2 Detection functional block. 4
4.4.3 Assessment functional block . 4
4.4.4 Human machine interface (HMI) functional block . 5
4.4.5 Communication functional block . 5
4.5 Time factors of hazard notification . 5
4.5.1 General . 5
4.5.2 Detection functional block time factor . 6
4.5.3 Assessment functional block time factor . 6
4.5.4 HMI functional block time factor . 6
4.5.5 Communication functional block time factor . 6
4.5.6 Time factor after hazard notification . 7
5 Requirements for external hazard detection and notification systems . 7
5.1 Principle . 7
5.2 Particulars . 7
5.2.1 General . 7
5.2.2 Detection information . 7
5.2.3 Assessment information . 8
5.2.4 Notification information . 9
5.2.5 Timing of hazard notification . 9
5.2.6 Distance of hazard notification . 12
6 Nonfunctional requirements . 15
6.1 General . 15
6.2 Consistency . 15
6.3 Priority . 15
6.4 Security . 15
6.5 Quality. 15
6.6 Integration . 16
Annex A (informative) Consideration of timing and distance of hazard notification (Case study) . 17
A.1 General . 17
A.2 Support for preventing collisions with forward obstacles [I-V Cooperative type] . 17
A.3 Support for preventing lateral collisions [V-V Cooperative type] . 18
Bibliography . 20

ISO/CD 18682
iv © ISO 2014 – All rights reserved

ISO/DIS 18682
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 18682 was prepared by Technical Committee ISO/TC 204, Intelligent transport systems, Working group
WG14, Vehicle/roadway warning and control systems.
ISO/CD 18682
Introduction
External hazard detection and notification systems recognize vehicle conditions and their ambient
environment using on-board remote sensing or cooperatively through communication between infrastructure
and vehicle (I-V), or among vehicles (V-V), and warn or inform the driver about external hazards.
This international standard addresses a number of functions, such as slow vehicle indication, collision hazard
warning, lane change assistance, red light warning, and intersection crossing assistance. There are common
requirements for several external hazard detection and notification systems. Many other working groups of
ISO and other standard development organizations may consider systems that assist driving safety. The
scope of ISO/TC204/WG14 is to promote a positive experience of vehicle/roadway warning and control
systems for the driver.
This international standard is not intended to provide requirements for particular systems defined in each
individual standard, but basic requirements based on basic principles for external hazard detection and
notification systems. They are common requirements in similar systems such as safety systems on nomadic
devices and systems developed in ISO/TC204/WG14, and should become root or primal requirements to
define each system’s requirements. This international standard will be referred to when designing various
systems in the future. It is expected to ensure uniformity and efficiency, and building systems that reduce the
likelihood of confusion for the driver.
For a better understanding of basic requirements, examples of typical formulas are shown in this standard as
informative elements. In addition, calculated examples of some services are given as information in the annex.
Fruitful information on particular consideration is listed in Bibliography.
vi © ISO 2014 – All rights reserved

WORKING DRAFT ISO/CD 18682
Intelligent transport systems—External hazard detection and
notification systems—Basic requirements
1 Scope
This international standard specifies basic requirements for systems to execute notifications such as warning
and awareness messages to provide hazard information to a driver.
Requirements include principle of notifying, timing of notification, distance of notification, and information
elements that should be included in messages.
NOTE Methods of implementing functions such as hazardous conditions detection, communication, and presentation
to drivers are not specified in this document.
NOTE Formulas in Section 5 and calculated concrete time or distance duration in Annex A are not normative
elements but informative elements.
2 Normative references
The following referenced documents are indispensable when applying this document. For dated references,
only the edition cited applies. For undated references, the latest edition of the referenced document (including
any amendments) applies.
(TBD) ISO ab-c:199x, General title of series of parts—Part c: Title of part
(TBD) ISO xyz (all parts), General title of the series of parts
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
hazard notification
information that is provided to a driver to notify of external hazards
3.2
warning
one type of hazard notification that requests action be taken immediately to avoid an external hazard
3.3
awareness message
one type of hazard notification that informs the driver about an external potential hazard within a short time in
the future
3.4
hazardous condition
external conditions that have intrinsic risks of causing accidents or collisions
3.5
safe state
vehicle state that is achieved after avoiding a hazardous condition
ISO/CD 18682
4 External hazard detection and notification systems
4.1 General
External hazard detection and notification systems distinguish hazardous conditions that occur currently,
imminently, or potentially, and notify the driver with a warning and/or awareness message to adjust steering
and speed quickly enough to avoid such situations.
4.2 Categories of hazard notification
Hazard notifications given to a driver are classified into two categories according to response of the driver
expected by the system as follows:
a) Warnings
Systems detect immediate hazardous conditions, assess need to perform an avoidance manoeuvre by
the driver in a short time, and notify the driver with a warning. The driver is expected to respond
accordingly with a corrective manoeuver in a short time;
b) Awareness messages
Systems detect potentially hazardous conditions and assess that a probability of a hazard is high if the
condition remains and the driver needs to perform avoidance action. The system then notifies the driver
with an awareness message. The driver is expected to prepare t
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