我国的公路交通事业在过去的20多年中发生了深刻的变化,特别是最近的13年中,公路交通实现了历史性跨越式发展。截止到2002年底,我国公路通车里程已达到175.8万公里,比1989年增长了74％;公路密度达每百平方公里18.3公里,13年增长了7.7个百分点; In the past two decades or so, profound changes have taken place in the road transport in our country. In particular, in the recent 13 years, highway traffic has achieved a historic leap-forward development. By the end of 2002, the mileage of our country’s roads had reached 1,718,000 kilometers, an increase of 74% over 1989; the density of roads reached 18.3 kilometers per 100 square kilometers, an increase of 7.7 percentage points over the past 13 years;