例1从纬阳开往成都方向去的汽车司机 在途中看到如图1所示的交通标志,在遵守交 通挽.,J的前提下,汽车抵达成都至少还禽要 h. 分析此图为常见的交通标 志,方形图案表示前方目的地及目 的地到此处的距离,即成都与此地 石丽{ 图1 相距80km;圆形图案是限速标志.其省略的单位 为我国 Example 1 The driver of a car driving from Weiyang to Chengdu will see the traffic sign shown in Figure 1 on the way. Under the premise of observing the traffic jam, J, the car must arrive at Chengdu to return at least the poultry. h. A common traffic sign, a square pattern indicates the distance between the destination and the destination in front of it, namely, Chengdu and Shili (a distance of 80km from Fig. 1); the circular pattern is a speed limit sign. The unit omitted is China.