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美国公路多,路的质量普遍较好。美国六百五十万公里公路百分之八十都是沥青及水泥路面,高速公路有八万多公里,已达到五万人口以上的城市全部通高速公路,而且路面较宽。为了节能,为多坐人的车专门划一条线路,让你跑快点,还有慢车道、快车道、警察专用车道。若发生交通事故,警察去处理就非常及时。美国高等级公路有的修在一个平面上,有的修成两条单行道,而且这两条单行道标高可以不一样,有的地方错着点,有的地方隔远点,交叉也有。
There are many highways in the United States, and the quality of roads is generally good. Eighty-five percent of the 6.5 million kilometers of highways in the United States are asphalt and concrete pavements. There are more than 80,000 kilometers of highways, cities that have reached more than 50,000 population, all through the expressway, and a wide road. In order to save energy, a multi-purpose car to draw a special line of vehicles, let you run faster, as well as slow lane, fast lane, police lane. In case of a traffic accident, the police can handle it very timely. Some highways in the United States are repaired on a flat surface, and some are built into two one-way streets. And the elevation of the two one-way highways may not be the same. Some areas may be misplaced, some may be separated by farther points, and others may cross.