prEN ISO 14505-3
(Main)Ergonomics of the thermal environment - Evaluation of thermal environments in vehicles - Part 3: Evaluation of thermal comfort using human subjects (ISO/DIS 14505-3:2025)
Ergonomics of the thermal environment - Evaluation of thermal environments in vehicles - Part 3: Evaluation of thermal comfort using human subjects (ISO/DIS 14505-3:2025)
ISO 14505-3:2006 gives guidelines and specifies a standard test method for the assessment, using human subjects, of thermal comfort in vehicles. It is not restricted to any particular vehicle but provides the general principles that allow assessment and evaluation. The method can be used to determine a measure of the performance of a vehicle for conditions of interest, in terms of whether it provides thermal comfort to people or not. This can be used in vehicle development and evaluation.
ISO 14505-3:2006 is applicable to all types of vehicles, including cars, buses, trucks, off-road vehicles, trains, aircraft, ships, submarines, and to the cabins of cranes and similar spaces. It applies where people are enclosed in a vehicle and when they are exposed to outside conditions. For those exposed to outside conditions, such as riders of bicycles or motorcycles, drivers of open sports cars and operators of fork lift trucks without cabins, vehicle speed and weather conditions can dominate responses. The principles of assessment, however, will still apply.
ISO 14505-3:2006 applies to both passengers and operators of vehicles where its application does not interfere with the safe operation of the vehicle.
Ergonomie der thermischen Umgebung - Bewertung der thermischen Umgebungen in Fahrzeugen - Teil 3: Bewertung der thermischen Behaglichkeit durch Versuchspersonen (ISO/DIS 14505‑3:2025)
Ergonomie des ambiances thermiques - Évaluation des ambiances thermiques dans les véhicules - Partie 3: Évaluation du confort thermique en ayant recours à des sujets humains (ISO/DIS 14505-3:2025)
L'ISO 14505-3:2006 donne des lignes directrices et spécifie une méthode d'essai pour l'évaluation du confort thermique offert par les véhicules, en faisant appel à des sujets humains. Elle ne se limite pas à un véhicule particulier mais pose des principes généraux permettant l'évaluation et l'appréciation. Cette méthode peut servir à mesurer les performances d'un véhicule dans des conditions déterminées et peut permettre de vérifier si celui-ci offre ou non un confort thermique à ses utilisateurs. Elle peut être utilisée pour le développement et l'évaluation des véhicules.
L'ISO 14505-3:2006 est applicable à l'ensemble des véhicules, y compris les voitures particulières, les autobus, les camions, les véhicules tout terrain, les trains, les aéronefs, les navires, les sous-marins, les cabines de grue et les espaces assimilés. Elle est applicable aux personnes prenant place dans un véhicule ainsi qu'à celles exposées aux conditions extérieures. Pour celles exposées aux conditions extérieures, par exemple les cyclistes, les motocyclistes, les conducteurs et passagers de voitures de sport et les opérateurs de chariots élévateurs à fourche sans cabine, la vitesse du véhicule et les conditions météorologiques peuvent constituer des facteurs dominants qui conditionnent les réponses. Cependant, les principes d'évaluation demeurent applicables.
L'ISO 14505-3:2006 est applicable aux passagers ainsi qu'aux conducteurs ou opérateurs des véhicules, dans la mesure où son application n'entrave pas la bonne marche et la sécurité du véhicule.
Ergonomija toplotnega okolja – Vrednotenje toplotnega okolja v vozilih – 3. del: Vrednotenje toplotnega ugodja s pomočjo preskusnih oseb (ISO/DIS 14505-3:2025)
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2025
Ergonomija toplotnega okolja – Vrednotenje toplotnega okolja v vozilih – 3. del:
Vrednotenje toplotnega ugodja s pomočjo preskusnih oseb (ISO/DIS 14505-3:2025)
Ergonomics of the thermal environment - Evaluation of thermal environments in vehicles
- Part 3: Evaluation of thermal comfort using human subjects (ISO/DIS 14505-3:2025)
Ergonomie der thermischen Umgebung - Bewertung der thermischen Umgebungen in
Fahrzeugen - Teil 3: Bewertung der thermischen Behaglichkeit durch Versuchspersonen
(ISO/DIS 14505-3:2025)
Ergonomie des ambiances thermiques - Évaluation des ambiances thermiques dans les
véhicules - Partie 3: Évaluation du confort thermique en ayant recours à des sujets
humains (ISO/DIS 14505-3:2025)
Ta slovenski standard je istoveten z: prEN ISO 14505-3
ICS:
13.180 Ergonomija Ergonomics
43.020 Cestna vozila na splošno Road vehicles in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
International
Standard
ISO/DIS 14505-3
ISO/TC 159/SC 5
Ergonomics of the thermal
Secretariat: BSI
environment — Evaluation of the
Voting begins on:
thermal environment in vehicles —
2025-05-28
Part 3:
Voting terminates on:
2025-08-20
Evaluation of thermal comfort using
human participants
ICS: 13.180; 43.020
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Reference number
ISO/DIS 14505-3:2025(en)
DRAFT
ISO/DIS 14505-3:2025(en)
International
Standard
ISO/DIS 14505-3
ISO/TC 159/SC 5
Ergonomics of the thermal
Secretariat: BSI
environment — Evaluation of the
Voting begins on:
thermal environment in vehicles —
Part 3:
Voting terminates on:
Evaluation of thermal comfort using
human participants
ICS: 13.180; 43.020
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
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Published in Switzerland Reference number
ISO/DIS 14505-3:2025(en)
ii
ISO/DIS 14505-3:2025(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Assessment of vehicle environments using human participants . 2
5 Principles of assessment . 3
5.1 Subjective methods .3
5.2 Objective methods .3
5.3 Behavioural methods . .3
5.4 Assessment of thermal comfort .3
6 Design of human participant trials . 4
6.1 Aim of trial .4
6.2 Selection of human participants .4
6.3 Measurement of participant responses .4
6.3.1 General .4
6.3.2 Subjective scales .5
6.4 Selection of operating conditions .7
6.5 Analysis and interpretation of results .7
7 Test method for assessing thermal comfort in vehicle . 7
Annex A (normative) Test method for assessment of vehicle thermal comfort . 8
Annex B (informative) Example of single-sheet subjective questionnaire .10
Annex C (informative) Practical example of vehicle thermal comfort assessment using test
method .11
Annex D (informative) Practical example of assessment of thermal comfort properties of
vehicle glazing .13
Annex E (informative) Practical example of assessment of thermal comfort properties of
vehicle seats .15
iii
ISO/DIS 14505-3:2025(en)
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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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 159, Subcommittee SC5.
This second edition cancels and replaces the first edition (ISO 14505 part 3 (2006)), which has been
technically revised.
The main changes are as follows:
— xxx xxxxxxx xxx xxxx
A list of all parts in the ISO 14505 series can be found on the ISO website.
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/DIS 14505-3:2025(en)
Introduction
Direct methods for the assessment of thermal environments (hot, moderate, cold) in vehicles involve
measurements of the responses of human participants. There are three types: subjective methods, objective
methods, and behavioural methods. Subjective methods quantify the responses of people to an environment
using subjective scales. Objective methods are those which quantify the physical, physiological or mental
condition of a person by the use of instrumentation or measures of an output such as performance measures.
Behavioural methods quantify or represent human behaviour in response to an environment. Each of these
methods has been developed according to basic principles and the most appropriate form of the method and
combination of methods used in concert for the assessment of thermal environments in vehicles will depend
upon the context and vehicle environment of interest. This part of ISO 14505 provides both principles
and application of methods for the assessment of thermal comfort in vehicle environments using human
participants. The most appropriate methods for evaluating thermal comfort in vehicles are subjective. The
principles for the construction of subjective assessment scales are given in ISO 10551 and are used in the
development of the test method specified in this part of ISO 14505. Physiological measurements on human
participants are described in ISO 9886 and are beyond the scope of this part of ISO 14505.
This part of ISO 14505 complements standards concerned with the ergonomics of thermal environments
and in particular can be used together with thermal indices that are valid for use in vehicle environments.
v
DRAFT International Standard ISO/DIS 14505-3:2025(en)
Ergonomics of the thermal environment — Evaluation of the
thermal environment in vehicles —
Part 3:
Evaluation of thermal comfort using human participants
1 Scope
This part of ISO 14505 gives guidelines and specifies a standard test method for the assessment, using human
participants, of thermal comfort in vehicles.
...
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