![]() When the racer rolls into the stage beam, the front tires are exactly on the starting line. When the front tires of a vehicle break the first light beam, the pre-stage beam, the pre-stage lights on the Tree indicate that the racer is about 7 inches from the starting line. Two light beams cross the starting-line area and connect to trackside photocells, which are wired to the Tree and electronic timers in the control tower. On each side of the Tree are six lights: a circle of small blue lights at the top - the top half for pre-staging and the bottom half for staging - three larger amber bulbs, a green bulb, and a red bulb. The losing racer in each contest is eliminated, and the winning racers continue until one remains.Įach race is started by an electronic device commonly called a Christmas Tree. A drag racing event is a series of such two-vehicle, tournament-style eliminations. A drag race is an acceleration contest from a standing start between two vehicles over a measured distance. ![]()
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