系统上电工作时需要用户首先设置东西方向和南北方向的通行时间，K1键为减1操作，K2为加1操作。K3键为交通灯运行确认按键，K4键为设定东西与南北参数的切换键。时间参数可从1秒到9秒进行调整。设置完成后系统将按新的时间参数来控制交通信号灯的切换-Power system when the user first need to set up an east-west direction and north-south direction of the passage of time, K1 key for an operation by, K2 for the operation plus 1. K3 key operation for the traffic lights to confirm button, K4 key things to set the parameters and the South and the North button switch. Time parameter can be from 1 seconds to 9 seconds to adjust. System will be set after the completion of the new time parameter to control the traffic lights switch