▍1. weijijiekou
设计一个十字路口交通信号灯,基本配置包括四个方向共组(红灯,黄灯,绿灯)‘还可以包括转弯灯(适用于单向三股以上车道),行人过马路信号灯(红灯,绿灯)。(Design a traffic signal lamp at the crossroads. The basic configuration includes four directions: the red light, the yellow light and the green light. It can also include turning lights (for one-way three shares or more lanes), pedestrians crossing the street signal lights (red lights, green lights).)