交叉口3D交通环境构建与交通仿真评价研究

3D Traffic Environment Modeling and Traffic Simulation Evaluation at Intersection

给出了道路交叉口3D交通环境的构建方法,以及交叉口的交通仿真评价方法.以某交叉口的交通优化管理为例,在VISSIM软件中构建了交叉口的3D交通环境,提出了改变该交叉口的相位绿灯时长、对换相位顺序2种优化方案,并进行了交通仿真,交通仿真结果表明:与方案2相比,方案1在整体上改善了交叉口的运行效率.案例分析表明,本文给出的方法可用于道路交通管理优化方案的评价当中.

Firstly, 3D traffic environment modeling method and traffic simulation evaluation method for road intersection were given. Then, an optimization case for intersection traffic management was studied, and 3D traffic environment was built based on the VISSIM software. Meanwhile, two optimization schemes, i. e. , changing the green time of different signal phases, and swapping the phase sequence, were conducted in the traffic simulation. The simulation result showed that scheme 1 performed better to improve intersection traffic operation efficiency compared with scheme 2. The case study demonstrated that the proposed method can be used to evaluate road traffic optimization schemes effectively.