8秒绿灯，2秒黄灯，6秒红灯循环；两个路口不会冲突；可以使用紧急按钮来控制交通灯（如南北走向一直绿灯，东西走向一直红灯）(8 seconds green light, 2 seconds yellow light, 6 seconds red light circulation; two junctions will not conflict; can use emergency button to control traffic lights (such as North and south