说明：  基于自动细胞法的平面交叉口仿真 对平面交叉口不取消左转的仿真程序：model1.m 对平面交叉口以绕行方式取消左转的仿真程序：model2.m 对平面交叉口以迂回方式取消左转的仿真程序：model3.m
(Does not abolish the intersection turn left emulator: model1.m intersection to bypass cancel turn left emulator: emulator model2.m circuitous way to cancel the intersection turn left: model3.m)