Description: Initial state two junctions red light something after crossing the green light, red light intersection north and south, east-west direction at this time opened to traffic delay time, the intersection of the green stuff off, then flashing yellow light flashing number times things junction red light green light while north-south junction, north-south direction was opened delayed for some time after the north and south of the junction of the green light is off, then the yellow light flashes blink several times after crossing the red light north-south, while something green light intersection repeated the above proce
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