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Christmas tree

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Christmas tree

system to start a drag race

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About Christmas tree

Modern drag races are started electronically by a system known as a Christmas tree. A common Christmas tree consists of a column of seven lights for each driver or lane. Each side of the column of lights is the same. The current design of the Christmas Tree used an NHRA national event, which was first used in April 2011, consists, from the top down, of a blue LED light set, then three amber bulbs, then a green bulb and a red bulb. At other events, and NHRA national events prior to 2011, the function of the blue light set was performed by four smaller amber bulbs.

Facts from Wikidata (CC0). Image by Dwerg85 via Wikimedia Commons (CC BY-SA 3.0).

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