This part of GB/T 16903 specifies:

- The procedure to be used in gathering the information needed to request standardization of graphical symbols;

- The method to be used in testing which variant of a graphical symbol is judged the most comprehensible; and,

- The method to be used in testing the extent to which a variant of a graphical symbol communicates its intended message.

The purpose of this part is to ensure that graphical symbols and signs using graphical symbols are readily understood. It in no way ensures that prohibitions or warnings using graphical symbols or signs designed in accordance with this part will, once understood, be complied with.

Note: Appropriate attitudes and motivation are required before compliance with any sign will result. A graphical sign is not intended as an easy alternative to surveillance, physical barriers, education or other means of achieving a safe situation.

Foreword I

1  Scope 1

2  Normative References 1

3  Terms and Definitions 2

4  Basic Procedures 2

5  Procedures 3

5.1  Collection of Information 3

5.2  Collection of Graphical Symbol Variant for Each Referent 3

6  Test by Printed Presentation 4

6.1  Comprehensibility Judgment Test 4

6.2  Comprehension Test 6

7  Test by Commuter Screen Presentation 10

7.1  Comprehensibility Judgment Test 10

7.2  Comprehension Test 12

8  Accepting a Variant as a Standard Graphical Symbol 14

Appendix A (Informative)  Key Points Required to be Considered during Collection of Information 15

Appendix B (Normative)  Comprehensibility Judgment Test 17

Appendix C (Normative)  Comprehension Test 19