Rea M S, Bullough J D, Radetsky L C, Skinner N P, Bierman A
Lighting Research Center, Rensselaer Polytechnic Institute, Troy, NY 12180 USA.
Light Res Technol. 2018 Jun 1;50(4):552-570. doi: 10.1177/1477153516670935. Epub 2016 Oct 3.
Flashing yellow warning lights are important for worker and driver safety in work zones. Current standards for these lights do not address whether and how they should be coordinated to provide course-way information to drivers navigating through work zones. A field study in which the intensities and flash patterns of warning lights along a simulated work zone were varied during daytime and nighttime, was conducted to assess drivers' responses to different configurations, leading to several conclusions. During the daytime, driver responses were relatively insensitive to warning light characteristics, although they preferred sequential and synchronized flash patterns over random, uncoordinated flashing. At nighttime, a temporal peak intensity of 25 cd with a sequential flash pattern was optimal for providing course-way information. A single initial warning light having a higher intensity may help drivers detect the work zone without creating unacceptable visual discomfort.
闪烁的黄色警示灯对于工作区域内工人和驾驶员的安全至关重要。这些灯的现行标准并未涉及它们是否以及应如何进行协调，以便为在工作区域内行驶的驾驶员提供路线信息。开展了一项实地研究，在白天和夜间改变沿模拟工作区域的警示灯强度和闪烁模式，以评估驾驶员对不同配置的反应，得出了几个结论。在白天，驾驶员的反应对警示灯特性相对不敏感，尽管他们更喜欢顺序和同步闪烁模式，而不是随机、不协调的闪烁。在夜间，25坎德拉的时间峰值强度与顺序闪烁模式相结合，对于提供路线信息最为理想。单个初始强度较高的警示灯可能有助于驾驶员发现工作区域，而不会造成不可接受的视觉不适。
