交通秩序是交通安全和效率的基础，是精准化管理与控制的保障。但由于以往检测手段的局限性和交叉口运行的复杂性，目前信号控制交叉口交通秩序仍是一个主观且模糊的概念，无法客观评价，更缺乏改善方法。本项目在明确交叉口交通秩序评价方法的基础上，解析影响机理，建立优化模型，实现交通秩序可测量、可计算、可优化，提高交叉口运行可控性。首先利用视频轨迹数据，获取车辆通过交叉口全过程的高精度运行状态，基于统计分析和机器学习，探寻与主观评价最契合的交通秩序客观评价指标和等级划分标准，建立评价方法。继而通过建立基于坐标的微观交通流模型，解析设计要素对交通秩序的作用机理。进而以交通秩序为目标，考虑优化方案与出行者行为的主从递阶决策关系，建立优化模型，提出改善策略。最后采用实验和实证检验优化效益。对信号控制交叉口交通秩序评价及优化方法的阐明，有助于保障各项管理控制措施效益的稳定发挥，为创造可控的运行环境提供了理论基础。

Traffic order is the foundation of traffic safety and efficiency as well as the guarantee of accurate traffic management and control. However, due to the limitations of previous detection methods and the complexity of intersections, the traffic order at signalized intersections is still a subjective and fuzzy concept which cannot be evaluated objectively, thus lacks improvement methods. To make the traffic order measurable, calculable and optimizable, this project aims to clear the evaluation method of intersection traffic order, analyze the influence mechanism, and establish the optimization model. Then, the operational controllability of intersections can be improved. First, the high-precision operational state of vehicles during the whole process passing the intersection will be obtained by video trajectory data. The objective evaluation indicators and grade classification standards will be explored based on statistical analysis and machine learning to fit in with the subjective evaluation results. Second, the coordinates-based microscopic traffic flow model will be established to analyze the effect mechanism of design elements on traffic order. Third, taking traffic order as the objective, the optimization model will be established, in which the leader-follower hierarchical relationship between the optimization scheme and the traveler’s behavior is considered. The improvement strategies can be proposed accordingly. At last, the optimal benefits will be analyzed by experimental and empirical tests. The research on the traffic order evaluation and optimization for signalized intersections not only can help ensure the stable operation of the traffic management and control strategies but also can provide a theoretical basis for establishing a controllable operation environment for intersections.