Abstract:

 The queue length was obtained by the video detector, shockwave theory and cumulative input-output techniques were combined to conduct the traffic spillover occurrence mechanism model based on physical queue. The estimate methods of dynamical queue length, duration time of a spillover and average overflow queue length were included in the model. At last, the comparison  between the results of simulation and model were conducted,  and the results showed the new model could reflect a more practical situation.

Key words: traffic overflow, queue, traffic flow modeling, traffic flow estimation, traffic simulation