随着社会经济的快速发展,区域间的经济联系越来越紧密,经济发展也越来越呈现区域的互补性与协同性。由经济派生的交通问题也成为区域经济发展关注的热点问题,如果处理不好,可能会成为制约区域经济发展的瓶颈。长江三角洲地区由15个城市组成,地跨两省一市,经济发达,互动性强,区 With the rapid social and economic development, the economic ties between regions are getting closer and closer, and the economic development is also showing more and more complementarity and synergies in the region. The traffic problem derived from the economy has also become a hot issue in the development of regional economy. If not handled properly, it may become a bottleneck restricting the development of regional economy. The Yangtze River Delta consists of 15 cities spanning two provinces and one city, with a developed economy and strong interaction. The district