Fire engine red

Traditional fire departments in large U.S. central cities and major metropolitan areas use this color on fire engines, but many suburbs and smaller cities use the color lime or bright yellow for their fire engines because of its greater visibility at night. In the U.K. the fire service added the more visible Battenburg markings in fire-engine red and retro-reflective yellow, often on a predominantly red vehicle.[4]

Initial research into fire appliance visibility was conducted by the Lanchester College of Technology and the Fire Brigade in Coventry, in the UK in c. 1965. It concluded that under the range of artificial street lighting in common use at the time, yellow better retained its conspicuity than red. Yellow was also more conspicuous in general road conditions in the daytime and during inclement weather. Research conducted by Stephen Solomon, a New York optometrist, promoted the use of "lime yellow" in the United States from the mid-1970s. Solomon conducted studies of the rate of vehicle accidents involving fire apparatus, concluding that the more conspicuously colored fire apparatus suffered a lower accident rate than the less conspicuous red used by the same fire department.[5][6]

Further research supporting the use of yellow for all emergency vehicles was published in 1978 in Australia.[7]

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  American fire truck in Butte County, California.
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  Red fire appliance with half-Battenburg side markings at Manchester Airport, England
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  Firefighting trucks of Taipei City Fire Department, Taipei, Taiwan
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  Italian fire trucks
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  Ukrainian fire engines
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  Ecuadorean fire engine on parade
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  Ethiopian fire truck at Gondar Airport

• Green Goddess
• International orange
• List of colors
• Safety orange
• School bus yellow
• Fire engine