ISO/TS 14198:2019
(Main)Road vehicles — Ergonomic aspects of transport information and control systems — Calibration tasks for methods which assess driver demand due to the use of in-vehicle systems
Road vehicles — Ergonomic aspects of transport information and control systems — Calibration tasks for methods which assess driver demand due to the use of in-vehicle systems
This document provides procedures that can be used as a secondary task in a dual task setting to determine whether that evaluation setting is standardized and valid for purposes of assessing driver attentional demand due to the use of an in-vehicle system. This document does not define calibration procedures for other evaluation activities that a laboratory might undertake. This document provides guidance on selecting a calibration task given a specific primary task. The primary tasks of interest include those that would be used in the evaluation of attentional demand. Such primary tasks are defined in other documents. The description of a calibration task includes its application, experimental setup, data collection, and procedures for analysis of results. The purpose of this document is not to define a reference criterion as to whether a given secondary task is suitable for use while driving. Although specific settings of parameters of a calibration task might be used to realize such a predefined pass/fail criterion, this document does not provide such a criterion for a given level of attentional demand.
Véhicules routiers — Aspects ergonomiques des systèmes d'information et de contrôle du transport — Tâches de calibration pour méthodes qui évaluent la distraction du conducteur due à l'utilisation des systèmes embarqués
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TECHNICAL ISO/TS
SPECIFICATION 14198
Second edition
2019-04
Road vehicles — Ergonomic aspects
of transport information and control
systems — Calibration tasks for
methods which assess driver demand
due to the use of in-vehicle systems
Véhicules routiers — Aspects ergonomiques des systèmes
d'information et de contrôle du transport — Tâches de calibration
pour méthodes qui évaluent la distraction du conducteur due à
l'utilisation des systèmes embarqués
Reference number
©
ISO 2019
© ISO 2019
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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 3
5 Calibration tasks . 4
5.1 Principle and overview . 4
5.2 Types of calibration tasks . 4
5.3 Critical Tracking Task (CTT). 4
5.3.1 Description . . . 4
5.3.2 Operation of the CTT . 5
5.3.3 Setup for CTT . 6
5.3.4 Test conditions for CTT . 6
5.3.5 Participants for CTT . 6
5.3.6 Participant instruction for CTT . 6
5.3.7 Practice trials . 7
5.3.8 Test metrics . 7
5.4 Surrogate Reference Task (SURT) . 7
5.4.1 Description . . . 7
5.4.2 Setup for SURT . 8
5.4.3 Test conditions for SURT . 9
5.4.4 Participants for SURT . . 9
5.4.5 Participant instructions for SURT . 9
5.4.6 Practice trials .10
5.4.7 Test metrics .10
5.5 N-back .10
5.5.1 Description . . .10
5.5.2 Operation of the n-back .10
5.5.3 Setup for n-back .11
5.5.4 Test conditions for n-back .11
5.5.5 Participants for n-back .11
5.5.6 Participant instruction for n-back .11
5.5.7 Practice trials .12
5.5.8 Test metrics .12
6 Calibration criterion .12
6.1 Calibration criterion procedure .12
6.2 General calibration considerations .14
Annex A (informative) Calibration task setup details using the LCT .15
Annex B (informative) Multi-lab reference data for LCT .17
Annex C (informative) Calibration task setup details using the DRT .19
Annex D (informative) Multi-lab reference data for DRT .20
Bibliography .22
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 of 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 www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 39,
Ergonomics.
This second edition cancels and replaces the first edition (ISO/TS 14198:2012), which has been
technically revised. The main changes compared to the previous edition are as follows:
— in addition to the Lane Change Test (LCT), the Detection Response Task (DRT) is added as a
primary task;
— in addition to the Critical Tracking Task (CTT) and Surrogate Reference Task (SURT), the n-back
task is added as calibration task.
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 2019 – All rights reserved
Introduction
The number of standardized methods to assess driver attentional demand due to the use of in-vehicle
information and communication devices is continuing to increase. In applying these methodologies, it is
important to understand and document variability in participants’ performance of standard calibration
tasks and procedures across laboratories and/or time.
A suitable calibration task should have the following attributes:
— It should be robust against the variations in cultural background of participants.
— Properly applied, the task should give repeatable quantitative results. It should be sensitive to
inappropriate variations in participants, equipment, location, experimenter and instruction.
— It should use durable and readily available equipment for conducting the task.
— It should apply to the driver population and be usable in a driving-like context.
A standardized calibration task can be used to produce a range of statistically stable, repeatable and
comparable secondary task demands for a participant in an experimental setting. This setting can be
used to assess the effect on driving performance of the attentional demand due to driver interaction
with an information, entertainment, and control or communication system while a vehicle is in motion.
Different calibration tasks are specified in this document to cover calibration manual, visual, and
cognitive aspects of various secondary task characteristics.
TECHNICAL SPECIFICATION ISO/TS 14198:2019(E)
Road vehicles — Ergonomic aspects of transport
information and control systems — Calibration tasks for
methods which assess driver demand due to the use of in-
vehicle systems
1 Scope
This document provides procedures that can be used as a secondary task in a dual task setting to
determine whether that evaluation setting is standardized and valid for purposes of assessing driver
attentional demand due to the use of an in-vehicle system. This document does not define calibration
procedures for other evaluation activities that a laboratory might undertake.
This document provides guidance on selecting a calibration task given a specific primary task. The
primary tasks of interest include those that would be used in the evaluation of attentional demand.
Such primary tasks are defined in other documents.
The description of a calibration task includes its application, experimental setup, data collection, and
procedures for analysis of results.
The purpose of this document is not to define a reference criterion as to whether a given second
...
TECHNICAL ISO/TS
SPECIFICATION 14198
Second edition
2019-04
Road vehicles — Ergonomic aspects
of transport information and control
systems — Calibration tasks for
methods which assess driver demand
due to the use of in-vehicle systems
Véhicules routiers — Aspects ergonomiques des systèmes
d'information et de contrôle du transport — Tâches de calibration
pour méthodes qui évaluent la distraction du conducteur due à
l'utilisation des systèmes embarqués
Reference number
©
ISO 2019
© ISO 2019
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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 3
5 Calibration tasks . 4
5.1 Principle and overview . 4
5.2 Types of calibration tasks . 4
5.3 Critical Tracking Task (CTT). 4
5.3.1 Description . . . 4
5.3.2 Operation of the CTT . 5
5.3.3 Setup for CTT . 6
5.3.4 Test conditions for CTT . 6
5.3.5 Participants for CTT . 6
5.3.6 Participant instruction for CTT . 6
5.3.7 Practice trials . 7
5.3.8 Test metrics . 7
5.4 Surrogate Reference Task (SURT) . 7
5.4.1 Description . . . 7
5.4.2 Setup for SURT . 8
5.4.3 Test conditions for SURT . 9
5.4.4 Participants for SURT . . 9
5.4.5 Participant instructions for SURT . 9
5.4.6 Practice trials .10
5.4.7 Test metrics .10
5.5 N-back .10
5.5.1 Description . . .10
5.5.2 Operation of the n-back .10
5.5.3 Setup for n-back .11
5.5.4 Test conditions for n-back .11
5.5.5 Participants for n-back .11
5.5.6 Participant instruction for n-back .11
5.5.7 Practice trials .12
5.5.8 Test metrics .12
6 Calibration criterion .12
6.1 Calibration criterion procedure .12
6.2 General calibration considerations .14
Annex A (informative) Calibration task setup details using the LCT .15
Annex B (informative) Multi-lab reference data for LCT .17
Annex C (informative) Calibration task setup details using the DRT .19
Annex D (informative) Multi-lab reference data for DRT .20
Bibliography .22
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 of 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 www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 39,
Ergonomics.
This second edition cancels and replaces the first edition (ISO/TS 14198:2012), which has been
technically revised. The main changes compared to the previous edition are as follows:
— in addition to the Lane Change Test (LCT), the Detection Response Task (DRT) is added as a
primary task;
— in addition to the Critical Tracking Task (CTT) and Surrogate Reference Task (SURT), the n-back
task is added as calibration task.
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 2019 – All rights reserved
Introduction
The number of standardized methods to assess driver attentional demand due to the use of in-vehicle
information and communication devices is continuing to increase. In applying these methodologies, it is
important to understand and document variability in participants’ performance of standard calibration
tasks and procedures across laboratories and/or time.
A suitable calibration task should have the following attributes:
— It should be robust against the variations in cultural background of participants.
— Properly applied, the task should give repeatable quantitative results. It should be sensitive to
inappropriate variations in participants, equipment, location, experimenter and instruction.
— It should use durable and readily available equipment for conducting the task.
— It should apply to the driver population and be usable in a driving-like context.
A standardized calibration task can be used to produce a range of statistically stable, repeatable and
comparable secondary task demands for a participant in an experimental setting. This setting can be
used to assess the effect on driving performance of the attentional demand due to driver interaction
with an information, entertainment, and control or communication system while a vehicle is in motion.
Different calibration tasks are specified in this document to cover calibration manual, visual, and
cognitive aspects of various secondary task characteristics.
TECHNICAL SPECIFICATION ISO/TS 14198:2019(E)
Road vehicles — Ergonomic aspects of transport
information and control systems — Calibration tasks for
methods which assess driver demand due to the use of in-
vehicle systems
1 Scope
This document provides procedures that can be used as a secondary task in a dual task setting to
determine whether that evaluation setting is standardized and valid for purposes of assessing driver
attentional demand due to the use of an in-vehicle system. This document does not define calibration
procedures for other evaluation activities that a laboratory might undertake.
This document provides guidance on selecting a calibration task given a specific primary task. The
primary tasks of interest include those that would be used in the evaluation of attentional demand.
Such primary tasks are defined in other documents.
The description of a calibration task includes its application, experimental setup, data collection, and
procedures for analysis of results.
The purpose of this document is not to define a reference criterion as to whether a given second
...
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