基于仿真分析的高速公路车辆当量换算系数研究

研究基于对VISSIM仿真模型参数系统地校核与标定，遵循动态空间理念，凭借仿真演示分析了各类车辆对交通流的影响程度，提取VISSIM仿真MOEs数据库中的车辆记录资料，应用车头时距法对当量系数进行了统计分析。研究表明，各种车型的当量系数与运行条件如车道数、限制速度、交通流量等存在一定的相关性，是车辆性能、道路条件、交通组成、交通管制措施和超车选择行为、超车机会等方面的协同作用的集中体现，其值的确定原则上不具有普适性，应该基于特定条件下进行针对性分析，以期科学合理地确定拟建道路的建设规模与道路等级。

Study of Vehicle Equivalent Coefficients in Freeway Based on Simulation Analysis

Based on the calibration and validation of the simulation model parameters in VISSIM and following the philosophy of dynamic space,the impact of various vehicles on traffic flow was analyzed by simulation demonstration,the vehicle records from the MOEs database in VISSIM were extracted,and the vehicle equivalent conversion coefficient was statistically analyzed with time headway.The research shows that there is a certain correlation of the vehicle equivalent conversion coefficients of various vehicle types ...