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For the Page of 'Firefighting Apparatus' under the section of 'Color.'

The reasoning for the yellow fire trucks having such high visibility is the application of psychology to human ergonomics which make fire trucks appear to be more visible, not only during the day, but also at night (Soloman & King, 1995). The bright yellow shade of paint often used for fire trucks is the easiest color for the human eye and brain to identify, making yellow a great candidate for any safety vehicle (Morton, 2012). The contrast of this bright yellow also bring out the visibility by using two specific types of contrast. Luminance contrast is one type of contrast that is significantly brighter than any other colors in the surrounding environment or background (Cook et al., 1999). Color contrast is the second type of contrast that is a significantly different color not usually found in the surrounding environment (Cook et al., 1999). The researchers that wrote the article that is on the APA website were both volunteer fire fighters and one was an optometrist (Solomon & King, 1995). They conducted the research from this article on the fire department in Dallas, Texas and gathered all of their data from this area (Solomon & King, 1995). The compared the yellow fire trucks to the red fire trucks and found the results to conclude that the likelyhood for the red trucks to be in a traffic accident was three times more likely than that of the yellow trucks (Solomon & King, 1995). These findings of their study implicate that the use of yellow fire trucks would be much safer and more beneficial for both the public and fire fighters alike. Another reason that yellow fire trucks may be suggested as safer is because yellow is often used as a color for marking danger or hazards because of its distinct color and high visibility, which may aid in preventing accidents and highlighting that there may be danger ("Safety color markings"). The U.K. also uses yellow as a safety measure and marking for emergency vehicles because of its visibility (Cook, et al., 1999).