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在相互连接的十字路口评估冲突的可能性和严重程度:从无人机轨迹数据的洞察力.
Qianqian Jin1, Mohamed Abdel-Aty1, Chenzhu Wang1
1Smart & Safe Transportation Lab, Department of Civil, Environmental & Construction Engineering, University of Central Florida, Orlando, FL 32816, USA.
Accident; analysis and prevention
|February 5, 2025
概括
靠近有信号的交叉路口会影响没有信号的交叉路口安全. 上游的交通量减少了下游的冲突风险,而角度冲突和左转队列增加了在没有信号的十字路口的风险.
科学领域:
- 交通工程是交通工程.
- 运输安全运输安全
- 城市规划 城市规划
背景情况:
- 由于众多的交通冲突,没有信号的十字路口带来了重大的安全挑战.
- 现有的研究往往忽视了附近有信号的交叉路口对没有信号的交叉路口安全的影响.
- 传统的交通流数据缺乏细节性,无法捕捉导致冲突的短期条件.
研究的目的:
- 调查靠近有信号交叉路口对未有信号交叉路口交通冲突的影响.
- 使用高分辨率轨迹数据分析冲突概率和严重程度.
- 识别影响冲突风险的因素,跨越不同细分的无信号交叉路口.
主要方法:
- 利用CitySim无人机数据集中的微观高分辨率轨迹数据.
- 使用代用安全措施:碰撞时间 (TTC) 和碰撞后速度预测变化 (Delta-V).
- 应用结构方程建模 (SEM) 用于相互连接的交叉分析和层次的联合通用线性混合模型 (JGLMM) 用于细分特定因素的识别.
主要成果:
- 在信号交叉点上游的交通量大大减轻了下游的冲突风险.
- 编织部分的角度冲突的概率和严重性随着角度的增加而增加.
- 右转车道的冲突风险随着队列的长度而减少,但左转车道的冲突风险增加.
结论:
- 高分辨率的轨迹数据对于在相互连接的十字路口进行详细的安全分析至关重要.
- 清除车道标志和向左转车道的预先标志是推的对策.
- 了解相邻交叉路口之间的相互作用可以增强层次安全评估.
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