混合流优先控制T型交叉口通行能力研究

在对城市优先控制T型交叉口进行交通调查基础上，分析交叉口混合交通流运行特性；对交叉口主路到达行人及非机动车流按“群”统计，借鉴间隙接受理论模型，对混合流下交叉口交通流运行等级进行划分，将主路到达的行人及非机动车流看作独立优先冲突流，并对其冲突特性进行分析，最终建立适应混合流下优先控制T型交叉口的通行能力计算模型，为交叉口改造、管理控制方式选择及整个路网通行能力的提高提供理论依据。

Research on the capacity of urban T-type priority intersection under mixed traffic flow

Based on the traffic investigations of urban T-type priority intersections, the characteristics of mixed traffic flow are analyzed with satistical methods. Then the concept of group is proposed to analyze the pedestrian and bicycle flows, the headways of which obey shifted exponential distribution. With the gap acceptance theory, the pedestrian and bicycle groups are regarded as independent flows, then the priorities and conflicts of the mixed traffic flows are analyzed. Last, models for computing the potential capacity of the minor-street movement under mixed traffic flows are set up, which can help transformations of existing intersections and the choices of management, and can increase the capacity of the whole road network.