信号交叉口的通行能力是指一个交叉口对于各个方向（或相位）全部车流所能提供的最大允许通过量，是各个方向（或相位）通行能力之和。
研究了环形交叉口通行能力与服务水平。
The capacity and the levels of service of roundabout are studied.
交叉口通行能力研究必须与交通运行质量的评价方法结合起来。
The research on the capacity of roundabouts is a complicated process. Capacity research must be connected with the appraising methods of traffic quality.
目前计算城市交通网络信号控制交叉口通行能力的方法很多，适用范围各有不同。
There are many methods of computing the capacity of signalized intersection in the road networks, which are fit for different conditions.
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