Development & testing of the IIID safety symbols system
Nora Olgyays 1995 book, Safety symbols art: Camera-ready and disk art for designers provides the only commercially available, copyright-free art for a system of safety symbols that fufills the American National Standards Institutes comprehension testing and design criteria for safety symbols. This article reproduces selected sections of its hereto unpublished companion publication, Safety symbols art: The testing protocol, materials & results which documents the research, testing protocol, materials and results for the IIID safety symbol system.
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