Standardization in the field of graphical symbols as well as of colours and shapes, whenever these elements form part of the message that a symbol is intended to convey, e.g. a safety sign.

Establishing principles for preparation, coordination and application of graphical symbols. General responsibility for the review and the coordination of those already existing, those under study, and those to be established. The standardization of new graphical symbols, when requested by a technical committee, or where it does not fall within the activity of an existing technical committee.


  • standardization of letters, numerals, punctuation marks, mathematical signs and symbols, and symbols for quantities and units. However, such may be used as a component of a graphical symbol.

Quick links


Published ISO standards *

of which 4 under the direct responsibility of ISO/TC 145


ISO standards under development *

Participating members
Observing members

* number includes updates

Reference Title Type
ISO/TC 145/SC 1 Public information symbols, signs and guidance system Subcommittee
ISO/TC 145/SC 2 Safety identification, signs, shapes, symbols and colours Subcommittee
ISO/TC 145/SC 3 Graphical symbols for use on equipment Subcommittee
ISO/TC 145/AG   Advisory Group Working group
ISO/TC 145/WG 7   Testing of the usability of graphical symbols Working group
Liaison Committees to ISO/TC 145

The committees below can access the documents of ISO/TC 145:

Reference Title ISO/IEC
IEC/SC 3C Graphical symbols for use on equipment IEC
IEC/TC 3 Documentation, graphical symbols and representations of technical information IEC
ISO/IEC JTC 1 Information technology ISO/IEC
ISO/TC 10/SC 1 Basic conventions ISO
ISO/TC 20 Aircraft and space vehicles ISO
ISO/TC 20/SC 9 Air cargo and ground equipment ISO
ISO/TC 20/SC 16 Unmanned aircraft systems ISO
ISO/TC 22 Road vehicles ISO
ISO/TC 22/SC 39 Ergonomics ISO
ISO/TC 23 Tractors and machinery for agriculture and forestry ISO
ISO/TC 27/SC 1 Coal preparation: Terminology and performance ISO
ISO/TC 37 Language and terminology ISO
ISO/TC 39 Machine tools ISO
ISO/TC 59/SC 16 Accessibility and usability of the built environment ISO
ISO/TC 67 Oil and gas industries including lower carbon energy ISO
ISO/TC 70 Internal combustion engines ISO
ISO/TC 96 Cranes ISO
ISO/TC 110 Industrial trucks ISO
ISO/TC 171/SC 2 Document file formats, EDMS systems and authenticity of information ISO
ISO/TC 173/SC 7 Assistive products for persons with impaired sensory functions ISO
ISO/TC 181 Safety of toys ISO
ISO/TC 184/SC 5 Interoperability, integration, and architectures for enterprise systems and automation applications ISO
ISO/TC 215 Health informatics ISO
ISO/TC 269/SC 3 Operations and services ISO


Liaison Committees from ISO/TC 145

ISO/TC 145 can access the documents of the committees below:

Reference Title ISO/IEC
CIE International Commission on Illumination ISO
IEC/SC 3C Graphical symbols for use on equipment IEC
IEC/TC 3 Documentation, graphical symbols and representations of technical information IEC
ISO/TC 110 Industrial trucks ISO


Organizations in liaison (Category A and B)
Acronym Title Category
CIE International Commission on Illumination A
EC - European Commission European Commission A

Date Month Location TC/SC Note
14 June 2024 Delft (Netherlands) ISO/TC 145/SC 2  

* Information definite but meeting not yet formally convened
** Provisional

ISO/TC 145 - Secretariat

BSI [United Kingdom]

British Standards Institution
389 Chiswick High Road
London W4 4AL
United Kingdom

Tel: +44 208 996 90 00
Fax: +44 208 996 74 00