take a turn for the worse

• In a word , transport of entrance and exit have became a bottleneck to development of urban transportation system the dissertation analyzes the reason that pcee traffic situation take a turn for the worse , based on which the content and scope of pcee transportation programming are outlined
  论文从分析造成出入口道路交通状况恶化原因入手，架构出入口道路交通规划研究内容和范围，试图把出入口道路及相关对外交通集散源作为一个整体加以研究，找出解决出入口道路交通问题的方法体系。