Symbols (Graphical)
If a picture is worth a thousand words, it is also open to a thousand interpretations. That may be acceptable where art is concerned, but when a graphical symbol intended to convey, for example, safety-related information does not get the right message across, then the consequences can turn out serious.
ISO/TC 145 deals with the problem. Amongst others it has developed ISO 9186, Graphical symbols - Test methods for judged comprehensibility and for comprehension which proposes a protocol consisting of two tests: a comprehensibility judgement test and a comprehension test. This method can be used to determine which symbols are best suited to effectively communicate the intended message.
ISO 7010, Graphical symbols - Safety colours and safety signs - Safety signs used in workplaces and public areas, provides a method of communicating safety information through a collection of signs designed for use in any workplace, location and sector where safety-related questions may be posed.