Study on a Leaders-Followers Composition in the Speed Distribution of Road Traffic Flow

A composition of leaders and followers in road traffic flow has been studied mainly in investigation of headway distribution, but a leaders-followers composition in speed distribution of traffic flow has not been well-established. The headway distribution model which can be evaluated the composition of leader and follower have been derived in our previous study. The model can also be calculated only by giving a traffic volume. In this paper, a speed distribution model which can express the composition of leaders-fand ffollowers independently is derived on the basis of the headway distribution model. The leaders-followers composition in speed distribution of traffic under various traffic flow level is evaluated and discussed.