高速公路弯道路段行驶速度分析与仿真应用

Driving Speed and Simulation of the Highway Curve Section

为了准确分析高速公路弯道路段对车辆行驶速度的影响,研究提出一种基于车辆GPS数据的车辆行驶速度变化特征分析方法。首先,汇聚夜间时段车辆在弯道路段的GPS数据,并对数据完成清洗预处理;其次,结合弯道路段的拓扑结构设计虚拟的检测断面,并将GPS数据聚合到检测断面,分析不同断面的车辆行驶速度变化特征;最后,将分析结果应用于微观交通仿真的参数标定中,验证该方案能够有效提升仿真模型的精度。研究结果已直接应用于深圳机荷高速公路改扩建工程微观交通仿真模型的参数标定,显著提高了仿真模型评估分析的可信度。

In order to accurately analyze the impact of curve section on vehicle speed,this paper proposes a vehicle speed analysis method based on vehicle GPS data.Firstly,the GPS data of vehicles in the curve section are gathered in the night period,and the data is cleaned and preprocessed.Secondly,the virtual detection section is designed combining with the topology structure of the curve section,and the GPS data is aggregated to the detection section to analyze the characteristics of vehicle speed change in different sections.Finally,the analysis results are applied to the parameter calibration of micro traffic simulation to verify the method can effectively improve the accuracy of simulation model.The research results are directly applied to the parameter calibration of micro traffic simulation model of Shenzhen Bao'an International Airport Highway reconstruction and expansion project,which greatly improves the credibility of simulation model evaluation and analysis.