International Organization for Standardization (ISO)
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ISO 11428:1996
Scope
Describes criteria for the perception of visual danger signals in the area in which people are intended to perceive and to react to such a signal. Specifies the safety and ergonomic requirements and the corresponding physical measurements.
ISO 11428:1996 history
1996ISO 11428:1996 Ergonomics - Visual danger signals - General requirements, design and testing