Graphical symbols — Safety colours and safety signs

BS EN ISO 3864 is a suite of standards that specify the design principles for safety signs and markings in the workplace and public areas. Its primary purpose is to promote safety by providing a consistent and easily understandable visual language to warn people of hazards, guide them to safety equipment, and instruct them on safe practices. The standard defines safety colours (red, yellow, blue, green) and their meanings, as well as the geometric shapes (triangle, circle, square, rectangle) used to frame graphical symbols. It dictates the use of pictograms to convey specific messages, ensuring that signs are comprehensible regardless of language or literacy levels. The standard covers the design of signs for various applications, including hazard warnings, mandatory actions, prohibition, and emergency equipment locations. Adherence to BS EN ISO 3864 helps organizations create a safer environment by ensuring that safety information is communicated effectively and consistently.