verilog语言实现交通灯，farm road和highway的十字路口，若农场路上检测到车，高速路上交通灯由绿变黄变红，农场路交通灯变绿。农场路上绿灯时间有上限，而高速路上绿灯时间有下限。包含.v文件和测试用.vwf文件-Verilog Language realize traffic lights, farm road and highway crossroads, if the farm on the road to detect vehicles, high-speed road tr