they light the tree in dc in early december.
they light the tree in dc in early december.
when do they light the tree in dc?
early december
Na
Na
after this point, the lighting sequence will be different based on the type of tree and start that a race is using. the "standard" tree will light up each large amber light consecutively with a .500 second delay in between them, then followed by the green light after another .500 second delay. a "professional" tree will light up all of the large amber lights simultaneously, and then after a .400 second delay, light up the green light. some classes will use a hybrid tree, known as a .500 professional tree, where the delay is .500 seconds instead of the .400 seconds used in a standard professional tree. on the activation of the green light from either style of tree, the drivers are supposed to start the race. leaving the "staged" line before the green light activates will instantly stop the count down and result in a lighting of the red light and a provisional disqualification of the offending driver in heads-up starts only. in a professional tree or a standard tree with a heads-up start, if both drivers leave before the green light activates, only the first to leave will be charged with a provisional disqualification. in a standard tree with staggered start times, a green light will be shown to the first driver, regardless if he jumped or not, and once the second driver takes the start, if one driver jumped the start, then that driver's lane will display the red light. if both drivers jump, only the driver whose infraction was worse will be shown the red light, as if it was a heads-up start. if the driver that did not active a red light in his lane commits a further foul during the run (crossing a lane boundary or hitting the barrier), and the driver who commits a red-light foul does not cross a boundary line, the red light violation is overturned and the driver who crosses the boundary line is disqualified, with the driver who committed the red-light foul winning the round.
christmas tree (drag racing)