Then, authors derived the optimal cycle calculation method based on the minimum delay, which was suitable for the multi-approach going coordinated with roundabout control.

• 并在此基础上提出了一种以交叉口车均延误最小为目标，适合于在非饱和状态下采用多进口道放行协同环道控制环形交叉口的最佳周期值计算方法。