1.东西方向、南北方向均有红、黄、绿三种信号灯；
2.东西干道和南北干道，绿灯下情况通行，红灯情况下不行，黄灯情况下　　慢行；
3.东西干道和南北干道交替控制；
4.实时提醒绿灯亮的剩余时间；
5.通行时间可调；
6.雾霾或夜间模式按钮按下，所有方向显示黄灯.(1. there are three red, yellow and green lights in east-west direction and north-south direction.
2. the East West trunk road and the north-south trunk road pass under the green light.
3. East and west main road and the north and South Main Road alternately control;
4. reminding the remaining time of the green light in real time;
5. the time can be adjusted;
6. haze or night mode button is pressed, all directions show yellow light.)