Hazard Associations of Warning Header Components

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Abstract
There has been relatively little warnings research directed at systematically examining the component features comprising existing warning signs as specified in standards (ANSI Z535) and guidelines (e.g., FMC, 1985; Westinghouse, 1981). This research examines several elemental features found in real-world warning signs to determine their individual as well as their combined effects on people's hazard perceptions. Various colors, signal words, shapes and configurations—both individually and in combination — comprising existing warning headers as well as newly developed constituents were evaluated in a series of rating and ranking tasks. The results confirmed several existing published recommendations (e.g., the color red is perceived to connote more hazard than other solid colors), but also showed instances where people's perceptions differed from those assumed in design standards and guidelines. Some newly-developed header configurations (e.g., having a skull icon to the right of the signal world) show promise as alternatives for signaling hazardous conditions.

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