INTERNATIONAL ISO
STANDARD 2575
Ninth edition
Road vehicles — Symbols for controls,
indicators and tell-tales
Véhicules routiers — Symboles pour les commandes, indicateurs et
témoins
PROOF/ÉPREUVE
Reference number
ISO 2575:2021(E)
ISO 2021
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ISO 2575:2021(E)
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© ISO 2021

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ISO 2575:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 General ............................................................................................................................................................................................................................ 2

5 Colour ............................................................................................................................................................................................................................... 3

6 Summary table of all symbols ................................................................................................................................................................. 4

Annex A (normative) Lighting and signalling devices .....................................................................................................................10

Annex B (normative) Braking system ...............................................................................................................................................................16

Annex C (normative) Visibility.................................................................................................................................................................................19

Annex D (normative) Cab environment and comfort .......................................................................................................................22

Annex E (normative) Maintenance and load functions ..................................................................................................................28

Annex F (normative) Engine .......................................................................................................................................................................................30

Annex G (normative) Fuel system .........................................................................................................................................................................35

Annex H (normative) Transmission ...................................................................................................................................................................37

Annex I (informative) Power drive ......................................................................................................................................................................40

Annex J (normative) Vehicle handling and cruise control ..........................................................................................................46

Annex K (normative) Active and passive safety systems ..............................................................................................................49

Annex L (normative) Security ...................................................................................................................................................................................54

Annex M (normative) Electric functions in general and electric road vehicles ....................................................58

Annex N (normative) Information and communication................................................................................................................61

Annex O (normative) Generic vehicle shapes ..........................................................................................................................................63

Annex P (normative) Miscellaneous ..................................................................................................................................................................66

Annex Q (normative) Special signs ......................................................................................................................................................................67

Annex R (informative) Special symbols and signs ...............................................................................................................................69

Bibliography .............................................................................................................................................................................................................................71

© ISO 2021 – All rights reserved PROOF/ÉPREUVE iii
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ISO 2575:2021(E)
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 ninth edition cancels and replaces the eight edition (ISO 2575:2010), which has been technically

revised. It also incorporates the Amendments ISO 2575:2010/Amd.1:2011, ISO 2575:2010/Amd.3:2014,

ISO 2575:2010/Amd.5:2016, ISO 2575:2010/Amd.6:2017 and ISO 2575:2010/Amd.7:2017.
The main changes compared to the previous edition are as follows:

— a column "Purpose and application of use" including individual descriptions were added to all

symbols;
— Annexes W – X have been moved to Annexes O – R;

— former Annex W (now Annex O) has been adopted to the structure of the other annexes;

— several signs in Annex Q have been deleted due to missing registrations (will be added after their

registration).

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.
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INTERNATIONAL STANDARD ISO 2575:2021(E)
Road vehicles — Symbols for controls, indicators and
tell-tales

IMPORTANT — The electronic file of this document contains colours which are considered to be

useful for the correct understanding of the document. Users should therefore consider printing

this document using a colour printer.
1 Scope

This document specifies symbols (i.e. conventional signs) for use on controls, indicators and tell-tales

applying to passenger cars, light and heavy commercial vehicles and buses, to ensure identification and

facilitate use. This document additionally describes the purpose and application for the symbols.

It also indicates the colours of possible optical tell-tales, which inform the driver of either correct

operation or malfunctioning of the related devices.
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 15008, Road vehicles — Ergonomic aspects of transport information and control systems —

Specifications and test procedures for in-vehicle visual presentation
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
symbol

visually perceptible figure used to transmit information independently of language, produced by

drawing, printing or other means
3.2
tell-tale

display that indicates, by means of a light-emitting device, the actuation of a device, a correct or

defective functioning or condition, or a failure to function
3.3
sign

visually perceptible graphic, generally larger in size than a symbol (3.1), designed for a label, tag or sticker

3.4
application

modification of symbol (3.1) originals in order to maintain visual clarity and overall consistency

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ISO 2575:2021(E)
4 General

4.1 The symbols and signs shall be as given in Annexes A to N and Annex P. Additional symbols are

given in Annexes O, Q and S. Minor deviations to the symbols and signs are permitted, provided they are

necessary to reproduce an accurate representation to the driver's line of sight.

NOTE Additional annexes can be included in future editions of this document if necessary.

4.2 In developing the symbols and signs shown in Annexes A to S, legibility factors such as line thickness,

gaps between lines, symbol and arrow shapes, etc. were carefully considered. Modifications that improve

legibility are permitted in the circumstances specified in 4.2.1, 4.2.2 and 4.2.3. When modifying symbol

elements, the graphic designer should consult IEC 80416-1, IEC 80416-2, IEC 80416-3, and IEC 80416-4.

4.2.1 Limitations inherent in some reproduction and display technologies can require increased line

thickness or other minor modifications of symbols. Such modifications are acceptable, provided the

symbol remains unchanged in its basic graphical elements and is easily discernible by the operator.

4.2.2 Additionally, to improve the appearance and perceptibility of a graphical symbol or to coordinate

with the design of the equipment to which it is applied, it can be necessary to change the line thickness

or to round off the corners of the symbol. The graphic designer is normally free to make such changes,

provided that the essential perceptible characteristics of the symbol are maintained.

4.2.3 The graphic designer may render a symbol in either outline or solid form unless this is otherwise

prohibited by the symbol description.

4.3 The shapes of the vehicle, seat and steering wheel shown in this document are not intended to

be restrictive but are the recommended shapes. Modifications to these shapes may be introduced by

designers in order to better represent the true shape of a given element. Except for the aforementioned

shapes, no other symbol elements shall be changed, except as provided in 4.2 or in the specific symbol's

description.

4.4 If a symbol shows a vehicle or parts of a vehicle in a side view, a vehicle moving from right to left in

the symbol area shall be assumed. If a symbol shows a vehicle or parts of a vehicle in a top, plan view, a

vehicle moving from bottom to top in the symbol area shall be assumed.

4.5 For actual use, all symbols shall be reproduced large enough to be easily discernible by the operator.

See IEC 80416-3 for guidelines on the proper sizing of symbols. Symbols shall be used in the orientations

shown in this document unless otherwise noted for individual symbols.

4.6 Symbols on controls and displays shall contrast well with their background. For most controls,

a light symbol on a dark background is preferred. Displays may use either a light symbol on a dark

background or a dark symbol on a light background, depending on which alternative provides the best

visual perception. When a symbol image is reversed (for example black to white and vice versa), it shall

be done for the entire symbol.

4.7 For symbols that are displayed using pixel matrices, the character matrix shall be as stipulated in

ISO 15008.

4.8 Letters and numerals may be used as symbols. For example, the letters P, R, N, D, have the meaning

indicated when used in association with transmission gear controls and displays on road vehicles. The

fonts shown in this document are not intended to be restrictive; other fonts may be substituted provided

that legibility is maintained.
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ISO 2575:2021(E)
4.9 “Failure” or “malfunction” may be conveyed in two ways:
a) base symbol combined with a colour code according to 5.1;

b) base symbol combined with failure symbol P.08; optionally, an appropriate colour code in

accordance with 5.1 may be added.

4.10 ISO/IEC registration numbers are shown for symbols in this document where applicable.

Registration numbers below 5000 refer to ISO 7000. Registration numbers above 5000 refer to

IEC 60417. Artwork in this document might differ from the artwork shown in IEC 60417, ISO 7000 or the

ISO Online Browsing Platform (OBP) database on graphical symbols for use on equipment. In this case,

the artwork in this document shall be used. If a symbol is illustrated in this document differs from the

one shown in the ISO OBP, it will be referenced as “Application of…”

4.11 The symbol numbers not represented are reserved for those symbols still under consideration at

the time of publication of this edition of ISO 2575. It is envisaged that the status of these symbols and the

numbers will be resolved by the next revision of this document.

4.12 Symbols in the annexes (except Annex Q and partly Annex R) of this document are presented at

32 % of original size. The grid marks “∟” denote the corners of the original 75 mm square. The grid marks

are not part of the symbol but are provided to ensure consistent presentation of all symbol graphics.

4.13 New symbols for functions not yet covered in this document should be constructed using symbols

or elements of symbols from this document in a logical manner, keeping the coherence with other

symbols already published.
5 Colour

5.1 When used on optical indicators or tell-tales, the following colours have the meanings indicated:

— red: danger to persons or very serious damage to equipment, immediate or imminent;

— yellow or amber: caution, outside normal operating limits, vehicle system malfunction, damage to

vehicle likely, or other condition which can produce hazard in the longer term;

— green: safe, normal operating condition (where blue or yellow is not required).

5.2 Certain colours are used for specific tell-tales (refer to “symbol description/application” column in

the annexes):
— blue: e.g. high beam, main beam;
— green: e.g. turn signals, low beam;
— yellow or amber: e.g. failure of anti-lock brake system;
— red: e.g. hazard warning.

5.3 If colour is used on symbols for heating and/or cooling systems, the colour red shall be used to

indicate hot, and the colour blue shall be used to indicate cold.
5.4 The colour white may be used where none of the above conditions applies.

5.5 A given symbol may be shown in more than one of the colours specified in 5.1 in order to convey a

Table 1 provides a pictorial summary. The purpose and application of the symbols are provided in

each annex.
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ISO 2575:2021(E)
© ISO 2021 – All rights reserved PROOF/ÉPREUVE 5
Table 1 — Summary of all symbols
Annex
Symbol No.
A B C D E F G H I J K L M N O P Q R
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ISO 2575:2021(E)
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Table 1 (continued)
Annex
Symbol No.
A B C D E F G H I J K L M N O P Q R
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ISO 2575:2021(E)
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Table 1 (continued)
Annex
Symbol No.
A B C D E F G H I J K L M N O P Q R
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ISO 2575:2021(E)
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Table 1 (continued)
Annex
Symbol No.
A B C D E F G H I J K L M N O P Q R
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ISO 2575:2021(E)
© ISO 2021 – All rights reserved PROOF/ÉPREUVE 9
Table 1 (continued)
Annex
Symbol No.
A B C D E F G H I J K L M N O P Q R
A = Lighting and signalling devices
B = Braking systems
C = Visibility
D = Cab environment and comfort
E = Maintenance and load functions
F = Engine
G = Fuel system
H = Transmission
I = Power drive
J = Vehicle handling and cruise control
K = Active and passive safety systems
L = Security
M = Electric functions in general and electric road vehicles
N = Information and communication
O = Generic vehicle shapes
P = Miscellaneous
Q = Special symbols
R = Special signs
S = Additional informative symbols
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ISO 2575:2021(E)
Annex A
(normative)
Lighting and signalling devices
Table A.1 — Symbols for lighting and signalling devices
Symbol ISO/IEC
Symbol form/
num- Symbol title Purpose and application of use registration
shape
ber number

A.01 High beam, main To identify the control that operates the high ISO 7000-0082

beam intensity, forward illumination. To indicate the
operational status of the high beam function.
1) When used as a status indicator the symbol
shall be steady blue.
2) Framed areas of this symbol may be solid.
3) The control operating alternately the high beam
and the low beam may include two symbols, one
for each of the positions: high beam, low beam.
A.02 Low beam, To identify the control that operates the moderate ISO 7000-0083
dipped beam intensity, forward illumination. To indicate the
operational status of the low beam function.
1) Framed areas of this symbol may be solid.
2) The control operating alternately the high beam
and the low beam may include two symbols, one
for each of the positions: high beam, low beam.

A.03 Headlamp cleaner To identify the control that operates the wipers ISO 7000-0250

located near the high (main)/low (dipped) beams
and dispenses washing fluid, initiating a sweeping
motion and fluid spray to clear the high (main)/
low (dipped) beams. To identify the headlamp
cleaner filler cap or fill point.

A.04 Headlamp level- To identify the control which allows up or down ISO 7000-0151

ling control adjustment to the forward facing high (main) or
low (dipped) beam.

A.05 Front fog light To identify the control that operates a special light ISO 7000-0633

located in the front of the vehicle to aid forward
illumination in foggy conditions. To indicate the
operational status of the front fog light.
NOTE If one symbol is used for both front and
rear fog lights, this symbol is used.

A.06 Rear fog light To identify the control that operates a special light ISO 7000-0634

located in the rear of the vehicle to aid with vehicle
identification in foggy conditions. To indicate the
operational status of the rear fog light.
NOTE If one symbol is used for both front and
rear fog lights, the symbol for front fog light (A.05)
is used.
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ISO 2575:2021(E)
Table A.1 (continued)
Symbol ISO/IEC
Symbol form/
num- Symbol title Purpose and application of use registration
shape
ber number

A.07 Long-range lamp To identify the control that operates high intensity ISO 7000-0639

forward illumination that enables the driver to
see at longer than normal range. To indicate the
operational status of the long-range lamp.
Applicable to those controls which are fitted on
the instrument panel, or in the near vicinity of
the driver.

A.08 Parking lights To identify the control that operates low intensity ISO 7000-0240

illumination (typically located on the sides of the
vehicle). To indicate the operational status of the
parking lights.

A.09 Position lights, To identify the control that operates low intensity ISO 7000-0456

side lights illumination (typically located on the sides, front
and rear of the vehicle). To indicate the operational
status of the position lights or side lights.

A.10 Loading light To identify the control that operates a light source ISO 7000-2457

located near or at the vehicle roofline, illuminating
the rear of the vehicle. To indicate the operational
status of the loading light.
A.11 Elevated head- To identify the control that operates a light ISO 7000-2458
lights source located in the front of the vehicle above
normal headlamp height. To indicate the op-
erational status of the elevated headlights.
Loading platform and rear axle may be omitted
if it is not needed.

A.12 Roof sign illumi- To identify the control that operates a sign located ISO 7000-2459

nation on the roof of the vehicle. To indicate the opera-
tional status of the roof sign.
Loading platform and rear axle may be omitted
if it is not needed.

A.13 Master lighting To identify the control or group of controls that Application of

switch operates the exterior lighting devices. IEC 60417-
5012

A.14 Exterior bulb fail- To indicate that the exterior bulb has failed to ISO 7000-1555

ure illuminate.
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ISO 2575:2021(E)
Table A.1 (continued)
Symbol ISO/IEC
Symbol form/
num- Symbol title Purpose and application of use registration
shape
ber number

A.15 Instrument panel To identify the control that adjusts the brightness ISO 7000-

illumination of the displays on the instrument panel. 1556B
A.16 Turn signals To identify the control that operates the visual ISO 7000-
indicators to signal the intended turning direction 0084
(left or right) of the machine or road vehicle. To
indicate the operational status of the turn signal
and the selected turning direction.
1) Tell-tale shall be flashing green.
2) Framed areas of this symbol may be solid.
3) It is permissible to separate the left and
right arrows.

A.17 Turn signal, trail- When used as an indicator on commercial road Application of

er vehicles: the square element indicates the func- ISO 7000-2664
tioning of the trailer's turn signal lamps. The
arrows indicate the functioning of the cab's turn
signal lamps.
NOTE Trailer shape can be omitted. If trailer
shape is omitted, arrows can be separated; how-
ever, the square element is included with each
separate arrow.

A.19 Hazard warning To identify the control that operates all side mark- ISO 7000-0085

ers and turn lights in a predetermined flashing
pattern. To indicate the operational status of the
hazard warning.
1) Simultaneous operation of either green turn
signal tell-tales, or separate red signal.
2) Framed areas of this symbol may be solid.
A.20 Signal horn To identify the control for the horn which emits ISO 7000-0244
a sound, usually intended to alert persons in the
vicinity to the presence of the vehicle.
A.21 Interior com- To identify the control that operates the inte- ISO 7000-
partment rior compartment illumination. To indicate the 1421A
illumination operational status of the interior compartment
illumination.
NOTE As a minimum the illumination is pro-
vided by an overhead (dome) lamp.

A.22 Interior direct- To identify the control that operates an interior, ISO 7000-2550

ed illumination operator-controlled light source focusing light
(reading/map light) on a defined area.
NOTE Symbol allows for mirror image.
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ISO 2575:2021(E)
Table A.1 (continued)
Symbol ISO/IEC
Symbol form/
num- Symbol title Purpose and application of use registration
shape
ber number
A.23 Work light To identify the control that operates the work ISO 7000-1204
light. To indicate the operational status of the
work light.
A.24 Beacon To identify the control for operation of the rotating ISO 7000-
and/or blinking light attached to equipment. To 1141A
indicate the operational status of the identification
or beacon light.

A.25 Taxi sign light To identify the control that operates a sign reading ISO 7000-2551

TAXI located on the roof of the vehicle. To indicate
the operational status of the TAXI light.

A.26 Medical assis- To identify the control that operates a sign dis- ISO 7000-2552

tance sign light playing a medical cross located on the roof of the
vehicle to indicate the operational status of the
medical assistance light.

A.27 Daytime running To identify the control that operates lower inten- Application of

lights sity low beam headlights, for better visibility. To ISO 7000-2611
indicate the operational status of the lights.

A.28 Night vision To identify the control that operates an infrared Application of

or similar technology that displays a forward ISO 7000-2665
roadway scene beyond the typical headlight beam.
As a tell-tale: it indicates operational status.

A.29 Footwell illumi- To identify the control that operates the lighting Application of

nation that illuminates the floor area only, separate from ISO 7000-2666
overhead compartment lighting. To indicate the op-
erational status of the footwell illumination system.

A.30 Low-level interi- To identify the control that operates interior Application of

or illumination compartment lighting (typically a red lens) used ISO 7000-2667
(night driving) to assist in maintaining the dark adaptation of
the driver while providing illumination to the
interior. To indicate the operational status of the
low-level interior illumination system.
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ISO 2575:2021(E)
Table A.1 (continued)
Symbol ISO/IEC
Symbol form/
num- Symbol title Purpose and application of use registration
shape
ber number

A.31 Sleeper com - To identify the control that operates the illumi- Application of

partment nation of only the sleeping area, separate from ISO 7000-2668
illumination overhead compartment lighting. To indicate the
operational status of the sleeper compartment
illumination system.

A.32 Bend lighting To identify the control that operates the lighting Application of

function that provides enhanced il
...

ISO/PRF 2575

Road vehicles -- Symbols for controls, indicators and tell-tales

Road vehicles -- Symbols for controls, indicators and tell-tales

Véhicules routiers -- Symboles pour les commandes, indicateurs et témoins

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Road vehicles -- Symbols for controls, indicators and tell-tales

Véhicules routiers -- Symboles pour les commandes, indicateurs et témoins

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