目前,广州市部分环形交叉口在没有交通信号控制的情况下已经无法满足当前的交通需求。在无法拆除该中心环岛的情况下,我们在此类路口安装了交通信号控制灯并进行相位配时的探讨。以便提高此类环形交叉口的通行能力,解决交通瓶颈问题。本文以中山一立交为例对具体的相位设计理念进行了详细的论述。 At present, some of Guangzhou’s roundabouts are no longer able to meet the current traffic demand without traffic signal control. In the event that the central roundabout can not be demolished, we installed traffic signal control lights at such junctions and discussed the phase allocation. So as to enhance the traffic capacity of such roundabouts and solve the traffic bottleneck problem. In this paper, an example of Zhongshan City, a specific phase of the concept of phase design were discussed in detail.