Abstract: Aiming at the traffic trunk road coordination control of phase conflict problems, a kind of dynamic coordination control method for trunk road is proposed. First of all, trunk road is divided into several control subareas by calculating correlation intersection. Then this paper calculates all control parameters, including control subarea parameter and coordination parameter between two control subareas. In this part, the formula of Webster cycle is modified, in view of the city traffic flow characteristics. At the same time, a branch phase top feasible degree function is designed, which is used for optimizing each intersection phase sequence. Above all, the cycle time of control subarea, the green ratio of every intersection, the phase sequence of every intersection and guide speed of every road section can be calculated according to the traffic information on a period of time. Finally, simulation study shows that, this method can effectively reduce the access time of trunk road than the decentralized control.

Key words: trunk road, control subarea, Webster cycle formula, branch phase top feasible degree function, phase sequence optimization

摘要： 针对干线交通双向绿波协调控制中的相位冲突问题，提出了一种主干道动态协调控制方法。根据交通路口关联度计算方法将主干道划分为若干个控制子区;根据划分好的控制子区，计算出控制子区控制参数和控制子区间的协调控制参数：其中，针对我国城市交通流特点，对韦伯斯特周期公式进行修正，并设计了一种支路相位排前可行度函数用于各个路口相序进行优化，依此根据一段时间内的交通流信息计算出所有控制参数，包括公共信号周期，各路口的绿信比，各路口的相序以及所有路段的引导车速。仿真结果表明，该方法比分散控制能有效地提高主干道的行车速度，能够有效降低干线的通行时间。

关键词: 主干道, 控制子区, 韦伯斯特周期公式, 支路相位排前可行度函数, 相序优化