The separate dual-left turn lane is a relatively new setting method of inlet channelization. According to the actual measurement at the intersection, it is found that there is obvious interference at the exit position of the intersection during the internal and external left-turning traffic flow, when the separate dual-left turn lane release. Quantitative analysis of the interference of internal and external left-turning traffic flow by using social force model, further in-depth analysis of the interaction forces of internal and external left-turning vehicles. A quantitative model for the interference of the outer left-turning vehicle of the intersection exit position to the inner left-turning vehicle is established, and the relationship model between the force magnitude and the relative position distance is established. The fitting and analysis calibration is carried out by the measured data, and the function model of the force of the inner left-turning vehicle and the horizontal relative distance of the vehicle is obtained. The result is in accordance with the functional relationship between the force of the social force model and the short semi-axis of the potential field ellipse. Finally, the recommended horizontal relative distance value of the vehicle is given.

CICTP