A、　　每个方向的指示灯按照要求点亮不同的时间，前行指示灯点亮10秒熄灭，接着暂停指示灯点亮2秒熄灭，然后左拐指示灯点亮8秒熄灭，按照这种方式进行循环；

B、　　当向东方向的前行指示灯点亮的时候，向南方向的前行指示灯熄灭，暂停指示灯和左拐指示灯依次点亮2秒﹑8秒，即在向东方向绿灯亮的10秒内，向南方向的红灯持续点亮2秒，之后黄灯持续点亮8秒；

C、　　当向南方向的前行指示灯点亮的时候，向东方向的前行指示灯熄灭，暂停指示灯和左拐指示灯依次点亮2秒﹑8秒，即在向南方向绿灯亮的10秒内，向东方向的红灯持续点亮2秒，之后黄灯持续点亮8秒；

-A, in each direction of the indicator light in accordance with the requirements of different times, before 10 seconds indicator light is off, then two seconds to suspend indicator light is off, then eight seconds left indicator light is off, in accordance with this cycle approach　

B, when the first trip to east direction indicator light when the direction of the south before the indicator goes out, suspended lights and left turn indicator light 2 seconds ﹑ 8 seconds, that is, the green light in the east direction 10 seconds, the south continued to light up the red light on the direction of two seconds, followed by continuous light yellow 8 seconds　

C, when the south before the direction indicator light when the forward direction towards the light is off, suspend the lights and left turn indicator light 2 seconds ﹑ 8 seconds, that is, the direction of green in the south 10 seconds, continuing east lit the red light on the direction of two seconds, followed by continuous light yellow