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对于经济和社会程度发达的大城市而言,城市轨道交通是城市中较大规模的基础设施建设项目,外部性作用巨大。一、轨道交通的外部性作用分析(一)促进区域经济发展轨道交通建成后,能够有效地加快城域之间的沟通,这为城市经济发展提供了先决条件。作为一个城市,都会有主导产业,作为本区域或者临近几个区域的相同产业的先导或龙头。有了便利的轨道交通,可以以本区域的强势主导产业为中心点,
For large cities with developed economy and social level, urban rail transit is a large-scale infrastructure construction project in the city, and externalities have a huge role to play. I. Analysis of Externalities of Rail Transit (I) Promoting Regional Economic Development After the completion of rail transit, the communication between metropolitan areas can be effectively accelerated, which provides the preconditions for the development of urban economy. As a city, there will be a leading industry as a pilot or leader of the same industry in the region or in a few neighboring regions. With convenient rail transportation, we can focus on the strong leading industries in the region,