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Color and Defective Color Vision as Factors in the Conspicuity of Signs and Signals

机译:颜色和瑕疵色觉是标志和信号显眼的因素

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The conspicuity of road traffic signs and signals for a group of observers with the color vision defect of deuteranopia is compared with that for a control group of observers with normal color vision. Conspicuity was measured by the proportion of reports of target objects detected in 300-ms presentations of projected slides of road scenes. There were two instructions, one designed to measure attention conspicuity and the other, search conspicuity. The attention conspicuity of red, orange, and green color-coded traffic control devices was significantly less for deuteranopes than for the observers with normal color vision, but this was not true for yellow and blue color-coded signs. This result is consistent with our understanding of the color perceptions of deuteranopes. The reduction of conspicuity was not so great for the search conspicuity condition. We conclude that redundant color coding does contribute to the conspicuity of signs and signals and that deuteranopes - and probably those with other severe forms of defective color vision - have a significantly reduced ability to notice colored targets, such as road signs and signals, in complex visual environments. The actual and potential application of this work is in the design of signs so they are conspicuous, especially when the user group includes people with defective color vision.
机译:比较了一组患有黄褐斑色觉缺陷的观察者与一组正常色觉观察者的道路交通标志和信号的显着性。通过在道路场景投影幻灯片的300毫秒演示中检测到的目标对象报告的比例来衡量醒目性。有两种说明,一种是用来衡量注意显眼性的,另一种是搜索显眼性的。氘核的红色,橙色和绿色交通控制设备的注意显着性比具有正常色觉的观察者要少得多,但是对于黄色和蓝色的颜色标志却并非如此。这个结果与我们对氘核的颜色感知的理解是一致的。对于搜索显眼条件,显眼性的降低不是很大。我们得出的结论是,冗余的颜色编码确实有助于标志和信号的醒目,而氘核-以及可能具有其他严重形式的颜色视觉缺陷的氘核-在复杂的情况下注意到有色目标(如道路标志和信号)的能力大大降低。视觉环境。这项工作的实际和潜在应用是在标牌的设计中,这样它们就很明显,尤其是当用户组中包括有色觉缺陷的人时。

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