This Part of GB/T 2893 establishes the colorimetric and photometric requirements and test methods for the colours of safety signs to be used in workplaces and public areas. It provides the colorimetric and photometric specifications for the named safety and contrast colours prescribed in GB/T 2893.1-2013.
The physical requirements that safety signs have to meet are primarily related to daytime colour and normally lit environments. This Part also includes the colorimetric requirements and test methods for safety signs and phosphorescent material which also operate in unlit environments.
This Part is applicable to all locations where safety issues related to people need to be addressed. However, it is not applicable to signalling used for guiding rail, road, river, maritime and air traffic and, generally speaking, to those sectors subject to a regulation that may differ.
The colorimetric and photometric properties of retroreflective safety signs, retroreflective materials combined with fluorescent or phosphorescent materials, or luminous safety signs activated by a radioactive source are not specified in this Part.
Foreword II
Introduction III
1 Scope
2 Normative References
3 Terms and Definitions
4 Requirements
4.1 General
4.2 Object colour under external illumination
4.3 Object colour of powered internally illuminated safety signs
5 Test Methods
5.1 General
5.2 Object colour under external illumination
5.3 Object colour of powered internally illuminated safety signs
Appendix A (Informative) Object Colour of Different Types of Safety Sign and Material
Appendix B (Normative) Classification of Emission Colour of Phosphorescent Material
Appendix C (Normative) Specification of Colour and Photometric Instrumentation
Appendix D (Informative) Guidance on Photometric Relationships between and within Safety and Contrast Colours of Graphical Symbols
Appendix E (Informative) Examples of Safety Colours and Contrast Colours for Object Colours of Ordinary Materials
Appendix F (Informative) Consideration of Defective Colour Vision
Bibliography
