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The Christmas Tree

A standard "Christmas Tree" starting system is used in Arena Drags.  Staging lights will alert drivers to a pending start.  The amber starting lights will sequence in both Full Tree and Pro Tree mode depending on classes.  The Full Tree will light in sequence at half-second intervals.  The Pro Tree will light all three ambers simultaneously, with a four-tenths of a second delay to the green start light.  The red light indicates a foul or early start.