United States Department of Transportation
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Abstract:This TechBrief provides highlights from a project (Federal Highway Administration report nos. FHWA-RD-03-065 and FHWA-RD-03-063) conducted to develop a set of clear, concise and user-centered human-factors design guidelines for in-vehicle icons. In addition, the project also developed an interactive design tool for presenting individual candidate icons in the icon collection in a manner that also provides evaluative information about the icons. This design tool, Icon IDEA, provides designers with the following basic functions: (1) a searchable database of more than 400 candidate icons, organized and selectable by specific in-vehicle system functions and intended messages; (2) access to evaluation ratings for each of the icons in the database that reflect critical physical features of the icons, such as adherence to perceptual principles, use of text, color, level of detail, and realism; (3) comprehension ratings from experimental subjects for a subset of the icons; (4) recommendations for further refining the design of an icon following the physical feature evaluation; and (5) clear and simple design guidelines for developing and evaluating in-vehicle icons. The development of this automated tool to assist with creating and evaluating icons will help in-vehicle designs substantially improve the initial recognition and usability of icons being considered for use. Because the initial icons will be of higher quality, the time from icon conceptualization to implementation will be decreased.
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