1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 26022:2010Road vehicles Ergonomicaspects of transportinformation and controlsystems Simulated lanechange test to assess in-vehiclesecondary task demandBS ISO 26022:2010 BR
2、ITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 26022:2010.The UK participation in its preparation was entrusted to TechnicalCommittee AUE/12, Safety related to occupants.A list of organizations represented on this committee can beobtained on request to its secre
3、tary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2010ISBN 978 0 580 58376 6ICS 13.180; 43.040.15Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was
4、published under the authority of theStandards Policy and Strategy Committee on 30 September 2010.Amendments issued since publicationDate Text affectedBS ISO 26022:2010Reference numberISO 26022:2010(E)ISO 2010INTERNATIONAL STANDARD ISO26022First edition2010-09-01Road vehicles Ergonomic aspects of tra
5、nsport information and control systems Simulated lane change test to assess in-vehicle secondary task demandVhicules routiers Aspects ergonomiques des systmes de commande et dinformation du transport Essai du changement de voie simul pour valuer la demande de tche secondaire bord du vhicule BS ISO 2
6、6022:2010ISO 26022:2010(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing.
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9、address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2010 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either
10、 ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2010 All rights reservedBS ISO 26022:2010ISO 2602
11、2:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Terms and definitions .1 3 Lane change test (LCT).3 3.1 Principle and overview3 3.2 Participants 4 3.3 Equipment 4 3.4 Scenario design.5 3.5 Experimental design .8 3.6 Procedure.9 3.7 Performance measures a
12、nd data analysis11 3.8 Validation .14 Annex A (normative) Instructions to participants .15 Annex B (informative) Experimental plan.18 Annex C (informative) Background and rationale .20 Annex D (informative) Adapting LCT to a real vehicle 23 Annex E (normative) Calculation of LCT metric using an adap
13、ted path trajectory for each participant 24 Annex F (informative) Interpretation of LCT measures.32 Annex G (informative) Initial validation of LCT38 Bibliography40 BS ISO 26022:2010ISO 26022:2010(E) iv ISO 2010 All rights reservedForeword ISO (the International Organization for Standardization) is
14、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 represent
15、ed 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 dra
16、fted 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 St
17、andard 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 26022 was prepared
18、 by Technical Committee ISO/TC 22, Road Vehicles, Subcommittee SC 13, Ergonomics applicable to road vehicles. BS ISO 26022:2010ISO 26022:2010(E) ISO 2010 All rights reserved vIntroduction Many advances are being made in introducing a wide range of information, communication, entertainment and driver
19、 assistance systems in motor vehicles. Navigation aids, emergency messaging systems and wireless communication, including e-mail and internet access, are all possible. Since many of these features require the drivers attention it is important to recognise that, on one hand, these systems provide inf
20、ormation and assistance but, on the other hand, have the potential to distract the driver as well. The lane change test (LCT) described in this International Standard, is a dual-task method that is intended to estimate secondary task demand on the driver resulting from the operation of an in-vehicle
21、 device in a laboratory setting. The method is simple and inexpensive so that it can be used by vehicle manufacturers, in-vehicle device manufacturers, and other organizations. The driver behaviour and attentional demand principles embodied in the LCT only apply to the operation of a typical passeng
22、er car, as the vehicle dynamics model, driver eye height, and lane change dimensions and geometries are scaled for such vehicles. The test procedure specified in this International Standard uses software to set up the LCT task on a computer, and to calculate the primary task performance measures. Ap
23、propriate software is available from the ISO Central Secretariat. BS ISO 26022:2010BS ISO 26022:2010INTERNATIONAL STANDARD ISO 26022:2010(E) ISO 2010 All rights reserved 1Road vehicles Ergonomic aspects of transport information and control systems Simulated lane change test to assess in-vehicle seco
24、ndary task demand 1 Scope This International Standard describes a dynamic dual-task method that quantitatively measures human performance degradation on a primary driving-like task while a secondary task is being performed. The result is an estimate of secondary task demand. The method is laboratory
25、 based, and this International Standard defines the method, the minimum requirements for equipment to support the method, and procedures for collecting and analyzing data derived from the method. The method is applicable to all types of interactions with in-vehicle information, communication, entert
26、ainment and control systems; manual, visual, haptic and auditory, and combinations thereof. Secondary tasks requiring speed variations to be performed cannot be tested with this method. It applies to both Original Equipment Manufacturer (OEM) and aftermarket in-vehicle systems. It also applies to sy
27、stems either portable or integrated into the vehicle. The driver behaviour principles, the specific task procedures and driving task correspond only to the operation of a passenger car. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1 adaptive
28、 model reference path trajectory adapted to each participant 2.2 baseline test condition with the primary task only 2.3 basic model nominal reference path trajectory is the same for all participants 2.4 calibration task type of reference task used for the purpose of comparing different tests or test
29、 results between sites, or over time at a given site 2.5 course path along which the simulated vehicle actually travels 2.6 dual task two tasks concurrently performed, primary task plus a secondary task BS ISO 26022:2010ISO 26022:2010(E) 2 ISO 2010 All rights reserved2.7 environment physical surroun
30、dings in which data are captured 2.8 goal system end state sought by the driver and which is meaningful in the context of a drivers use of an in-vehicle system EXAMPLE Obtaining guidance to a particular destination; magnification of a map display; or cancelling route guidance. 2.9 integrated system
31、two or more in-vehicle devices, which provide information to, or receive output from, the driver of a motor vehicle, whose input and/or output have been combined or harmonized EXAMPLE 1 An in-vehicle entertainment system and route guidance system which use the same visual, manual and auditory interf
32、ace. EXAMPLE 2 An in-vehicle entertainment system whose auditory output mutes when a mobile phone call is made or received. 2.10 lane change lateral displacement of a vehicle from current lane to another lane, including crossing one or two lanes 2.11 lane change task series of prescribed lane change
33、 manoeuvres that are the main component of the primary task in the lane change test 2.12 outlier an observation that lies outside the overall pattern of a distribution 2.13 manufacturer organisation or person designing, developing, producing, integrating and/or supplying in-vehicle equipment 2.14 pa
34、th deviation measure mdev difference between a reference path trajectory and an actual driven course 2.15 portable system nomadic device device which provides information to, or receives output from the driver of a motor vehicle, that can be used within the vehicle without installation or can be rap
35、idly and easily installed in and removed from the vehicle 2.16 primary task course following and manoeuvring control activity which a participant performs throughout the duration of a test (simulated substitute for driving) 2.17 reference task a standardized secondary task which can be used to compa
36、re different levels of performance degradation BS ISO 26022:2010ISO 26022:2010(E) ISO 2010 All rights reserved 32.18 run driving used to collect LCT data, typically consisting of 18 lane changes accomplished over a 3 minute period in either single task or dual task conditions 2.19 secondary task int
37、eraction with an in-vehicle information, communication, entertainment, or control system, carried out concurrently with the primary task 2.20 secondary task demand sum of perceptual, cognitive and motoric activity required by a secondary task 2.21 single task one task (primary or secondary task) wit
38、hout additional activity (as opposed to dual task) 2.22 task process of achieving a specific and measurable goal using a prescribed method NOTE Ultimately, it is for the users of this International Standard to determine tasks that are meaningful in the context of a drivers use of an in-vehicle devic
39、e. EXAMPLE 1 Obtaining guidance by entering a street address using the scrolling list method, continuing until route guidance is initiated (visual-manual task). EXAMPLE 2 Determining where to turn based on a turn-by-turn guidance screen (visual task). 2.23 track three-lane, straight, simulated roadw
40、ay 2.24 trial investigation of one participant undertaking one repetition of one secondary task 3 Lane change test (LCT) 3.1 Principle and overview The lane change test (LCT) is a simple laboratory dynamic dual task method that quantitatively measures performance degradation in a primary driving tas
41、k while a secondary task is being performed. The primary task in the LCT is a simulated driving task which resembles the visual, cognitive and motor demands of driving. In the LCT, a test participant is required to do a primary task consisting of driving at a constant, system-limited speed of 60 km/
42、h along a simulated straight three-lane road containing a series of lane changes defined by signs displayed on a screen. Simulated vehicle position is controlled by means of a steering wheel. Participants are instructed in which of the lanes to drive by signs that appear at approximately regular int
43、ervals on both sides of the track. The LCT is performed by participants according to pre-test instructions contained in this International Standard (see Annex A). The method may be implemented in a laboratory, in a driving simulator, in a mock-up or in a real vehicle. There is no limitation to the d
44、efinition of a secondary task according to this International Standard as long as the secondary task is compatible with the LCT procedure. EXAMPLE Secondary tasks requiring speed variations to be performed are not accommodated. BS ISO 26022:2010ISO 26022:2010(E) 4 ISO 2010 All rights reserved3.1.1 A
45、pplication of the LCT In a typical application of the LCT, the primary task performance degradation resulting from a certain secondary task can be compared to the performance degradation resulting from a reference task (see Annex B). A reference task is a standardized secondary task which can be use
46、d to compare different levels of performance degradation. Such standardized reference task can also be employed to compare different test sites or to verify consistency in repeated testing. For product development purposes, the LCT can also be used to compare alternative HMI candidates or solutions
47、rather than comparing each of these solutions to a reference task (see Annex C). 3.2 Participants Participants shall be licensed drivers having a similar level of familiarity with the secondary task under investigation. Other relevant characteristics of the participants shall be recorded (gender, ag
48、e, driving experience and previous experience with the LCT). At least 16 participants shall take part in the evaluation of a single secondary task or in the comparison of two or more secondary tasks for a within-subject design. 3.3 Equipment 3.3.1 Display of visual driving scene The LCT visual drivi
49、ng scene shall be realised with a monitor or projector with a net refresh rate of at least 50 Hz. A minimum resolution of 1024 768 pixels with a colour depth of 24 bit (also called True Color) is required. The size of the display device must meet the requirements defined in 3.4.3. 3.3.2 Testing environment The illumination level in the testing environment shall be appropriate to the secondary task. Simulated engine sound is optional and, if used, shall be adjusted to a low level. Participants shall be comfortably seated d
