实现十字路*通灯控制，红灯亮时间为40s，绿灯亮时间为35s，黄灯亮5s，黄灯会在绿灯亮完后闪烁5s-To achieve control of traffic lights at the crossroads, the red light time to 40s, the green light time of 35s, bright yellow 5s, yellow light will blink green after 5s