在传感器有限的环境中实现平衡流量的无相信号控制
Minji Kim1, Yohee Han2, Youngchan Kim1
1Department of Transportation Engineering, University of Seoul, Seoul, 02504, South Korea.
Scientific reports
|February 18, 2025
概括
这项研究引入了一种新的无相信号控制系统,可以提高交通效率和公平性,即使传感器有限. 该系统使用细胞传输模型 (CTM) 来估计交通队列,改善所有移动的绿灯分配.
科学领域:
- 土木工程 土木工程是指土木工程.
- 运输工程 运输工程
- 智能运输系统 智能运输系统
背景情况:
- 传统的自适应交通信号控制 (ATSC) 系统可能导致不公平的绿色时间分配,特别是在过度和的交通条件下.
- 在城市环境中传感器覆盖范围有限,这给实时交通管理和队列长度估计带来了挑战.
- 现有的系统往往难以平衡交通吞吐量与所有流动的公平服务.
研究的目的:
- 开发和评估一个无相的交通信号控制系统,以提高传感器有限的环境中的交通效率和公平.
- 解决传统ATSC在管理过度和交通和确保公平的绿色时间分配方面的局限性.
- 提出基于细胞传输模型 (CTM) 的方法来估计超出传感器检测区域的队列长度和等待时间.
主要方法:
- 利用细胞传输模型 (CTM) 估计实时队列长度和交通流动等待时间.
- 实施了分布式方法,即相邻的十字路口交换交通信息.
- 开发了一个无相系统,根据估计的交通状况动态分配绿色时间.
- 在两个交叉点和3x3网格网络上进行了数值实验.
主要成果:
- 与传统控制系统相比,平均控制延迟减少了15%.
- 在不同交通流动之间的服务水平中表现出小差异,表明公平性有所改善.
- 在传感器检测区域之外的拥挤条件下成功估计了队列长度和等待时间.
- 在各种网络配置上验证了系统的性能.
结论:
- 拟议的无相信号控制系统为改善城市地区的交通效率和公平提供了可扩展的解决方案.
- 基于CTM的方法有效地应对传感器覆盖范围有限和过度和的流量所带来的挑战.
- 该系统能够在最大化吞吐量与公平对待交通流动之间取得平衡,这表明该系统在现实世界中有很大的应用潜力.
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