一、放开地铁政策，发展地铁经济从１８６３年伦敦建成第一条地铁到２０００年的１３８年，世界已有１１５个城市建成７０００公里地铁。显然在不同国家、不同发展阶段内，凡经济发达的国家与城市都建有地铁。地铁已成为一个国家综合国力、城市经济实力、人们生活水平及现代化 First, let go of the subway policy, the development of the subway economy From 1863 London built the first subway to the year 138 in 2000, the world has 115 cities built 7000 km subway. Obviously in different countries, different stages of development, where developed countries and cities have built the subway. Subway has become a comprehensive national strength of the country, the city’s economic strength, people’s living standards and modernization