研究机器人车占比对无信号路口交通流的影响
Analyzing Fundamental Diagrams of Mixed Traffic Control at Unsignalized Intersections
- 通过仿真测试0%到100%机器人车渗透率下的交通流
- 不同路口容量变化不一，高渗透率时增容趋势不明显
- 提示需按路口特点制定自动驾驶车辆管理策略
本报告分析了混合交通中机器人车（RV）渗透率变化对无信号交叉口基础交通图的影响。通过四个不同交叉口的系列仿真，研究了交通流特性与RV渗透率的关系。RV渗透率从0%到100%以25%为间隔变化。结果表明，尽管机器人车影响交通动态，但其对流量和速度的影响在不同渗透率下并不一致。基础交通图显示，某些交叉口在特定RV比例下容量上升，但这一趋势在接近100%渗透率时不再持续。各交叉口间差异表明局部因素可能显著影响交通流特征。研究凸显了将机器人车融入现有交通系统的复杂性，并强调需制定针对具体交叉口的交通管理策略，以应对日益增长的机器人车渗透。
原文摘要 · Abstract (English)
This report examines the effect of mixed traffic, specifically the variation in robot vehicle (RV) penetration rates, on the fundamental diagrams at unsignalized intersections. Through a series of simulations across four distinct intersections, the relationship between traffic flow characteristics were analyzed. The RV penetration rates were varied from 0% to 100% in increments of 25%. The study reveals that while the presence of RVs influences traffic dynamics, the impact on flow and speed is not uniform across different levels of RV penetration. The fundamental diagrams indicate that intersections may experience an increase in capacity with varying levels of RVs, but this trend does not consistently hold as RV penetration approaches 100%. The variability observed across intersections suggests that local factors possibly influence the traffic flow characteristics. These findings highlight the complexity of integrating RVs into the existing traffic system and underscore the need for intersection-specific traffic management strategies to accommodate the transition towards increased RV presence.
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