东西向绿灯亮若干秒，黄灯闪烁5次后红灯亮， 红灯亮后，南北向由红灯变为绿灯，若干秒后南北向黄灯闪烁5此后变红灯，东西向变绿灯，如此重复。-East-west green light for several seconds after the yellow light flashes 5 times the red light, red light, from north to south by the red light into green light, after several seconds, the north and south to the blinking yellow 5 thereafter becomes red, something to change green, Repeat.