原文传递
Relative Visibility of Internally and Externally Illuminated On-Premise Signs.
| 题名： | Relative Visibility of Internally and Externally Illuminated On-Premise Signs. |
| 作者： | Garvey-P.M. |
| 关键词： | *Sign-lighting; *Illumination-.;Performance-evaluation; Lighting-equipment; Motorists-; Signage-; Recognition-distance; Legibility-; Readability-; Contrast-orientation. |
| 摘要： | The purpose of this study was to evaluate the relative performance of internally and externally illuminated on-premises signs. To do this, the performance of six signs that differed in model illumination, text and background colors, and contrast orientation (i.e. light letters on a darker background and dark letters on a lighter background) was evaluated. These signs were field tested with older and younger motorists in both daytime and night conditions. The two measures of effectiveness were sign recognition distance and legibility distance. Based on the results, the distance at which drivers can begin to read a sign's message as a function of the type of illumination was calculated. These distances were then converted to time at various approach speeds to determine the amount of time that motorists will have to read the sign content. Results showed that the internally illuminated signs provided significantly longer visibility distances and longer available reading times than externally illuminated signs. |
| 报告类型： | 科技报告 |
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