ISO 9186-1:2014规定了一种测试图形符号可理解性的方法。它提供了图形符号变体传达其预期信息的程度的度量。目的是确保图形符号和使用图形符号的标志易于理解。其目的是鼓励用户在没有补充（即解释性）文本的情况下正确理解图形符号。当无法开发此类图形符号时，可能需要提供图形符号以及用预期用户的语言解释其含义的补充文本。

ISO 9186-1:2014 specifies a method for testing the comprehensibility of graphical symbols. It provides a measure of the extent to which a variant of a graphical symbol communicates its intended message. The purpose is to ensure that graphical symbols and signs using graphical symbols are readily understood. The intention is to encourage the development of graphical symbols which are correctly understood by users when no supplementary (i.e. explanatory) text is presented. When such a graphical symbol cannot be developed, it might be necessary to present a graphical symbol together with supplementary text explaining its meaning in the language of the intended users.