英语翻译公路运输系统规模宏大技术先进 截至2003年年底，美国公路总里程达到639.8万公里，居世界第一位；高速公路里程

英语翻译
公路运输系统规模宏大技术先进
截至2003年年底，美国公路总里程达到639.8万公里，居世界第一位；高速公路里程达到9.4万公里，也居世界第一位。美国公路交通发展史上最宏伟的工程是艾森豪威尔州际与国防公路系统，该工程于1956年由时任美国总统艾森豪威尔签署《1956年联邦资助公路法案》后实施。此项工程于20世纪70年代中期基本完成，全长7.8万公里，全部由高速公路构成，连通了美国人口在5万人以上的所有城市，形成了以州际公路系统为骨干的四通八达的公路网络。
美国的汽车总量也居世界首位。2003年达到2.37亿辆，约占世界总量的31.1%，其中小客车达到1.36亿辆，约占世界总量的26.5%，平均每百人拥有小客车46.7辆，每个家庭拥有小客车1.23辆。美国成年人持有驾照的比率接近100%。
在综合运输体系中，美国的公路货运和客运方式均占主导地位。以2001年为例，公路运输方式完成的城市间货运量为76.66亿吨，约占各种运输方式的65.9%；货物周转量为1.69万亿吨公里，约占各种运输方式的28%。公路旅客周转量为7.51万亿人公里，约占各种运输方式的89.8%，公路旅客周转量的绝大部分是由小客车完成的。

Up to 2003 the year's end,the American road total course achieved6.398 million kilometers,occupy the first in the world; The highwaycourse amounts to 94,000 kilometers,also occupies the first in theworld.In the US highway traffic history the grandest project is theEisenhower state border and the national defense highway system,thisproject in 1956 after when was appointed American President Eisenhowerto sign "in 1956 Federation To subsidize Road Bill" to implement.Thisproject basically completes to 20th century 70's intermediate stages,the span 78,000 kilometers,by the highway constitution,havecompletely connected the American population in 50,000 person of aboveall cities,has formed by the state border highway ststem the roadnetwork which extends in all directions for the backbone.
US'S automobile total quantity also occupies the world first place.In2003 achieved 237 million,approximately compose the world totalquantity 31.1%,passenger vehicle achieved 136 million,approximatelycompose the world total quantity 26.5%,the average every hundredpeople have passenger vehicle 46.7,each family has passenger vehicle1.23.The American adult has 驾照 the ratio to approach 100%.
In the synthesis transportation system,US'S road freighttransportation and the passenger transportation way occupy thedominant position.Take 2001 as the example,the interurbantransported goods volume which the highway transportation waycompletes is 7.666 billion tons,approximately composes each transportmode 65.9%; The volume of freight turnover is 169 billion tonkilometers,approximately composes each transport mode 28%.The roadvolume of passenger turnover is 751 billion passenger-kilometer,approximately composes each transport mode 89.8%,the road volume ofpassenger turnover major part is completes by the passenger vehicle.