DIN ISO 3864-3:2025-12

This document gives principles, criteria and guidance for the design of graphical symbols for use in safety signs as defined in ISO 3864-1, and for the safety sign element of product safety labels as defined in ISO 3864-2. Graphical symbols in safety signs are used for a wide range of purposes. There is a need to standardize the principles for creating these graphical symbols to ensure visual clarity, to maintain consistency, and thereby to improve recognition and comprehension. The principles set forth in this part of ISO 3864 are the design criteria by which graphical symbols are judged for standardization and publication in ISO 7010. This standard differs from DIN ISO 3864-3:2012-11 as follows: a) ISO 3864-3:2024 has been adopted in full; b) references to the list of translations of safety messages and to the ISO Online Browsing Platform (OBP) have been added in the Introduction; c) the specification for exclusion zones for warning signs has been clarified in 7.4.4; d) the standard has been editorially revised. The International Standard has been prepared by ISO/TC 145 "Graphical symbols", Subcommittee SC 2 "Safety identification, signs, shapes, symbols and colours" with the essential participation of German experts. The committee responsible for the revision on a national level is Joint Working Committee NA 095-01-06 GA "Sicherheitskennzeichnung" ("Safety marking") at DIN Standards Committee Safety Design Principles (NASG).