【摘要】 车辆行驶里程 (VMT)是机动车尾气排放预测模型的重要输入参数之一 ,VMT值的精确度直接影响了模型的预测精度。文中提出了一种VMT估算模型 ,该模型引入指数回归模型 ,结合采样交通流量和路段特征来估测所有路段流量和VMT ,并按时间和速度进行了进一步划分 ,在实际运用中 ,该模型在现有技术条件下也易于标定更多还原

【Abstract】 Vehicie Miles Traveled (VMT) is an important input parameter to emission estimation model,which would affect the accuracy of the model output.This paper presents an alternative VMT estimation approach that incorporates both traffic counts and link attributes through an exponential regression model in estimating 1ink volumes and VMTs,which are then further disaggregated over the speed and time domains.The model coefficients can be calibrated easily in the real-world applications.更多还原