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Development of Optimal On-Premise Electronic Message Center (EMC) Lighting Levels and Sign Lighting Measurement Techniques.
| 题名： | Development of Optimal On-Premise Electronic Message Center (EMC) Lighting Levels and Sign Lighting Measurement Techniques. |
| 作者： | Garvey, P. M. |
| 关键词： | Drivers; Electronic Billboards; Electronic Message Center(emc); Human Factors; Lighting Levels; Lighting Measurement; Night Visibility; Procedures; Safety; Signs; Testing |
| 摘要： | Research conducted recently for the United States Sign Council Foundation found no consensus in the research literature or the practices of the commercial electronic message center (EMC) industry on lighting measurement or appropriate lighting levels of on-premise EMCs, nor are there any national standards for EMC lighting levels developed through research at this time. It was clear that, in order to make them optimally legible during daytime hours and at night, the lighting levels of these EMCs must be (and typically are) adjusted automatically as a function of ambient light level. However, the procedures for measuring EMC light levels and the appropriate levels to set the signs during some daytime scenarios (e.g., dusk/dawn and overcast) and at night are inconsistent among the leading U.S. EMC manufacturers and are not supported by empirical, independent, human factors data. This has led to complaints of EMCs being over bright, primarily at night, though this issue has also been reported during dusk and dawn hours and under overcast daytime conditions. The objective of this research was to begin addressing this situation by developing, through original field and test track research, EMC lighting levels that would optimize sign legibility at night from the prospective of a motorist who is viewing the EMC, and to develop standard light level testing procedures. |
| 报告类型： | 科技报告 |
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