说明：  南北红灯亮维持25S。在南北红灯亮的同时东西绿灯也亮，并维持20S。到20s时，东西绿灯闪烁，闪烁3S后熄灭。在东西绿灯熄灭时，东西黄灯亮，并维持2S。到2S时，东西黄灯熄，东西红灯亮。同时，南北红灯熄灭，南北绿灯亮。东西红灯亮维持30S。南北绿灯亮维持25s。然后闪烁3s，熄灭。同时南北黄灯亮，维持2S后熄灭，这时南北红灯亮，东西绿灯亮
(The north and south red lights are on for 25s. When the north and south red lights are on, the East and west green lights are also on, and maintain 20s. At 20s, the east-west green light flashes, and then goes out after 3S. When the east-west green light is off, the East-West yellow light is on and 2S is maintained. By 2S, the East-West yellow light is off, and the East-West red light is on. At the same time, the North-South red light goes out and the South-North green light goes on. Keep the East-West red light on for 30s. The north and South green lights stay on for 25s. Then blink for 3S and turn off. At the same time, the North-South yellow light is on and off after 2S. At this time, the North-South red light is on and the east-west green light is on)