论文标题
利用实时车辆轨迹的微观模拟中基于安全的驾驶员行为建模的评估
An Assessment of Safety-Based Driver Behavior Modeling in Microscopic Simulation Utilizing Real-Time Vehicle Trajectories
论文作者
论文摘要
观察到的驾驶行为的准确表示对于有效评估模拟建模中的安全性和性能干预措施至关重要。在这项研究中,我们实施并评估了基于安全的最佳速度模型(OVM),以在微观模拟中提供对安全至关重要行为的高保真复制,并展示其对以安全性交通控制策略评估的影响。为PTV Vissim的研究站点创建了一个综合的仿真模型,利用从实时视频推理中提取的详细车辆轨迹信息,这些信息也用于校准基于安全的OVM的参数,以复制研究站点中观察到的驾驶行为。然后将校准的模型合并为外部驱动器模型,该模型在模拟的汽车跟随情节中超过Vissim的默认Wiedemann 74模型。初步分析的结果表明,通过使用我们的模型复制在研究站点上观察到的现有安全冲突时,取得了重大改进。然后,我们利用这种改进的现状表示形式来评估信号控制和速度限制执行在将这些现有冲突减少23%的潜在影响。这项研究的结果展示了通过使用数据驱动的汽车跟踪行为建模可以实现的可观改进,并且提供的工作流程提供了一种端到端,可扩展,自动化和可推广的方法,可通过利用汽车轨迹通过路边的视频划分来复制现有的驾驶行为。
Accurate representation of observed driving behavior is critical for effectively evaluating safety and performance interventions in simulation modeling. In this study, we implement and evaluate a safety-based Optimal Velocity Model (OVM) to provide a high-fidelity replication of safety-critical behavior in microscopic simulation and showcase its implications for safety-focused assessments of traffic control strategies. A comprehensive simulation model is created for the site of study in PTV VISSIM utilizing detailed vehicle trajectory information extracted from real-time video inference, which are also used to calibrate the parameters of the safety-based OVM to replicate the observed driving behavior in the site of study. The calibrated model is then incorporated as an external driver model that overtakes VISSIM's default Wiedemann 74 model during simulated car-following episodes. The results of the preliminary analysis show the significant improvements achieved by using our model in replicating the existing safety conflicts observed at the site of the study. We then utilize this improved representation of the status quo to assess the potential impact of different scenarios of signal control and speed limit enforcement in reducing those existing conflicts by up to 23%. The results of this study showcase the considerable improvements that can be achieved by utilizing data-driven car-following behavior modeling, and the workflow presented provides an end-to-end, scalable, automated, and generalizable approach for replicating the existing driving behavior observed at a site of interest in microscopic simulation by utilizing vehicle trajectories efficiently extracted via roadside video inference.