在我国改革开放的大潮中 ,一种新型企业如雨后春笋蓬勃新生 ,它们就是随着多数省市区高等级公路的出现而建立 (或筹划建立 )的公路经营企业。公路运输具有门到门的便捷运输效果 ,特别是高速公路更具有快速、安全、优质、高效的优势 ,世界发达国家在第二次世界大战后快步发展高 In the tide of reform and opening up in our country, a new type of enterprises are thriving and springing up. They are road operators established (or planned to be established) along with the emergence of highways in most provinces and cities. Road transport has a door-to-door convenient transport effect, especially the expressway is more rapid, safe, high quality and efficient advantages, the developed countries in the world after the rapid development of World War II