摘要
通过分析车辆在城市交通干线交叉口的延误规律,从相对相位差的约束条件出发,以干线的总延误最小为目标,建立了城市交通干线的相位差优化模型。模型中考虑到了车辆在干线相邻交叉口的双向延误情况,并采用自适应遗传算法在Matlab下编程实现了相位差优化模型的算例计算。结果表明该优化模型具有较好的有效性,能较大地提高城市交通干线协调控制的性能。
Aiming at the minimal delay of vehicles at intersections,this paper proposes an optimal offset model for urban traffic arterials using constraint conditions of relative offset by analyzing the rules of traffic flow delay at the intersections.Two-way delays of vehicles at adjacent intersections are also taken into account in this model.The paper develops a case study of the offset optimization model using adaptive genetic algorithm（AGA） in Matlab.Results show that this optimal offset model performs very well for urban traffic arterial coordination.
出处
《交通信息与安全》
2011年第2期13-18,共6页
Journal of Transport Information and Safety
基金
国家科技部科技创新基金项目(批准号:国科发计字[2009]276号)资助
关键词
相位差
优化模型
约束条件
自适应遗传算法
signal offset
optimization model
constraint condition
adaptive genetic algorithm
