Abstract: Mixed traffic is the main characteristic of large cities in China, especially at signalized intersection. Great interference occurs between vehicles and bicycles at the same phase but heading for different directions, which severely reduce the traffic capacity of the intersection, deteriorate the hidden trouble on traffic safety and make the traffic management very hard to be implemented. Microscopic traffic behavior model is one of the powerful tools for studying mixed traffic; Based on the mixed traffic problem at three phase signalized intersection, this paper analyzed the main factors affecting the traversing behavior of right-turn vehicles, and established a microscopic behavior simulation model of right-turn vehicles traversing through bicycles. The model is calibrated and validated with field data. This model illustrates the interference mechanism between vehicles and bicycles at signalized intersection and provides a flexible and efficient experiment method for the microscopic simulation of vehicles under mixed traffic conditions.

Key words: Signalized intersection, Car-following model, Car-traversing model, Gap acceptance

摘要： 混合交通是我国城市交通的主要特征，特别是在平面信号交叉口。同相位不同方向行驶的机动车和自行车之间产生大量的干扰，严重影响了交叉口的通行能力，增加了安全隐患，给交通管理带来了难以治理的问题。微观行为模型是研究机非混合交通的有效工具，本文基于三相位信号控制交叉口处的机非混合交通问题，分析了影响机动车右转弯通过交叉口的主要因素，建立了右转机动车在信号交叉口内穿越直行自行车的微观行为模型和自由行驶模型，并利用实测数据对模型参数进行了标定，验证了模型的有效性。该模型揭示了信号交叉口处的机非干扰机理，为进一步研究混合交通条件下机动车的微观行为模型提供了一种方便、高效的仿真分析手段。

关键词: 信号交叉口, 机动车跟驰模型, 穿越模型, 接受间隙