The Empirical Study on the Relationships among the Times of Lane-Changing, Speed and Density of Traffic Flow - For Level of Service Two in Different Lanes of Weaving Area of Urban Expressway

This paper analyzed the statistical relationships among lane-changing, speed and density of traffic flow in different lanes of urban expressway weaving area under a given traffic condition and LOS two. A series of models was recommended. And then, the effectiveness between the recommended model and the existing model was compared. Although the optimization effect not very clear, but it shows that the lane-changing factors have some effects .