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A Model for Evaluating Countermeasures at Highway-Railway Grade Crossings.
| 题名： | A Model for Evaluating Countermeasures at Highway-Railway Grade Crossings. |
| 作者： | Saccomanno-Frank-F; Lai-Xiaoming |
| 关键词： | Color-; Incandescent-lamps; Light-emitting-diodes; Light-sources; Luminous-intensity; Onset-times; Signal-lights; Traffic-signals; Vehicle-lighting-devices; Visual-detection |
| 摘要： | Light sources used in signal lights for transportation applications have a variety of temporal onset characteristics, including a wide range of onset times. These characteristics, along with luminous intensity and color characteristics, can have important impacts on the ability to detect and respond to colored signal lights. Studies of the impact of these factors on responses to colored signals are reviewed, along with potential implications for the selection of light sources used in traffic and vehicle signals. The onset characteristics of recently developed light sources might offer significant potential to improve visual detection of signal lights. Nonetheless, it is important to understand the context in which a signal light is presented to determine whether such improvements in visual detection have practical significance. |
| 总页数： | Transportation Research Record: Journal of the Transportation Research Board. 2005. (1918) pp123-127 (4 Fig., 1 Tab., 20 Ref.) |
| 报告类型： | 科技报告 |
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