发达的公路网对国民经济的发展起着巨大的促进作用。对发展中国家来说,建设资金欠缺是制约公路发展的主要问题。二次世界大战后,意大利、法国、日本的现代化干线公路网发展迅速,主要是这些国家采用了特许公司建设、经营、发展收费高速公路系统的有效办法。目前,世界上许多发展中国家吸取了这些国家的经验,都 The developed road network plays a huge role in promoting the development of the national economy. For developing countries, the lack of funds for construction is the main problem that restricts the development of the road. After World War II, the rapid development of modern trunk road networks in Italy, France and Japan was mainly due to the fact that these countries adopted an effective way for concessionaires to build, operate and develop toll freeway systems. At present, many developing countries in the world have drawn on the experience of these countries