[编者按]交通微循环和支路网作为解决区域细部交通需求、分担干线交通的有效手段,不仅维系着城市功能的正常运转,而且对社会经济发展起着重要作用。长期以来,我国大部分城市道路网规划中缺乏对城市支路网和街巷小路网规划的重视,使城市 [Editor’s note] Traffic microcirculation and slip road network as an effective means to solve regional traffic demand and share the trunk traffic, not only maintain the normal functioning of urban functions, but also play an important role in social and economic development. For a long time, most of the urban road network planning in our country lacks the emphasis on the urban road network and the street network planning, making the city