基于粗糙集理论的公交信号优先算法研究

提出一种基于粗糙集理论的公交信号优先控制算法，以绿灯阻塞参数和红灯拥挤度为条件属性，以绿灯延时率为决策属性，构造知识库和边界域函数并约简规则，然后利用VISSIM仿真软件，以车辆延误和人均延误为评价指标对该算法进行评价。结果表明，该算法能减少交叉口4．93％的车辆延误和8．25％的人均延误。

Bus Signal Priority Algorithm Based on Rough Set Theory

This paper proposes a bus signal priority algorithm based on rough set theory. The block parame- ter and the crowd parameter are regarded as the condition attribute, as well as the prolong of green light time is regarded as the decision attribute to design knowledge base and boundary function before rule reduction. Then it uses VISSIM simulation software to evaluate the algorithm and takes car average delay and person average delay as evaluation indexes. The result is that the car average delay reduces 4.93% and person average delay reduces 8.25%.