Prediction of queue length of vehicles caused by abnormal events of expressway is an important basis for traffic managers to implement effective control of expressway sections. A flow estimation method for the target cross section and a speed estimation method for the target scene by analyzing the impact of ramp flow on the main road flow is proposed. By comparing the applicability of the queue length prediction model based on the classic theory, this paper selects the appropriate model as the basic model and improves it considering the characteristics of the target scene and the actual data conditions, so as to realize the effective prediction of the queue length of the target scene. The validity and stability of the model is verified by the actual data in the target road section.

CICTP