Fact of the Day: The F15 is fitted with "Swing Wings" so that it can indicate which way it is about to turn to fellow pilots by swinging a wing in the direction of travel it is going to take #AvGeekpic.twitter.com/SuW3BZQRl8
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Like a lot of technology this was developed on aircraft and later used by car manufacturers in the early 1900s
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Safety first.
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Yup had them on my first car.
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