United States Department of Transportation
i
Human Factors Guidelines to Develop Educational Tip Cards for Aging Road Users [summary]
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2017-06-01
[PDF-89.58 KB]
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Abstract:Since standardization of traffic signals and signs across the U.S. began in the 1930s, research and experience have led to many changes, based on the effects, both intended and unintended, of traffic control devices. For example, in recent years, many left-turning drivers have seen the Flashing Yellow Arrow (FYA) for the first time. The FYA has the same meaning as a green signal indication governing a left turn lane. However, some drivers may misinterpret the green signal indication as a protected left turn, which can result in a very serious crash. The question arises whether an aging road user encountering a new traffic control device may have difficulty interpreting it. As new devices are installed and the driving population ages, education is needed, but what information is most helpful?
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