Abstract: Aiming at the congestion problems caused by the irrational link segments of urban expressways and urban conventional ways, two philosophies, that is,“time for space and”space for time , are proposed. Meanwhile, four kinds of ideas for the traffic flow optimization and nine kinds of improving methods and measures are also proposed. Furtherm ore,setting dynamic or static signal control at the link segment is an effective supplement to the set of optimization programs for link segments of expressways and conventional ways. At last, using the evaluation results of VISSIM simulation, each method and their co bination are applied to case studies to illustrate the feasibility and effect

Key words: expressway, conventional ways, weaving section, optimization, signal control , VISSIM simulation

摘要： 针对由于快速路和城市常规道路不合理衔接造成的城市道路拥堵问题,通过研究交织区拥堵机理,提出了 ??以时间换空间和??以空间换时间2种理念,并以此提出了4种优化交通流的思路和9种改善方法和措施,尤其 是在衔接段设置动态或静态交通信号的方法,对快速路和常规道路衔接段的优化组织方案集是一个有力的补充。 最后通过案例对各方案和方案组合进行应用,利用VISSIM仿真得出评价结果,说明其可行性和效果。

关键词: 快速路, 常规道路, 交织区, 优化, 信号控制, VISSIM仿真