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To solve the problem of congestion in the interweaving area of Nanjing inner ring expressway during rush hour, an non-interrupt weaving area control strategy was proposed based on five-lane weaving area with 2 ramps for vehicles driving in 4.5 lanes on average. For the priority to improve the main road capacity and increase the speed of weaving vehicles, the traffic diversion of weaving and non-weaving traffic flow in advance made the vehicles run orderly, and the number of available lanes for weaving traffic flow was increased by one-way lane changing on the ramp. The capacity and the influence factors of service level in weaving area were analyzed, and three methods of speeding up, access control and sign-and-marks control were introduced for alleviating traffic congestion. The non-interrupt weaving area control strategy of vehicles driving in 4.5 lanes on average was proposed, and the simulation models were built to compare the average speeds of main road and side road in different schemes by VISSIM. The results show that under the conditions of heavy traffic and small interweave ratio in the weaving area, compared with no control measures, scheme B 4.5 lane weaving with one-way lane changing on the auxiliary line has significant effect in optimizing the main line driving speed with average increasing of more than 8%, and scheme D of one-way lane changing on the auxiliary line with separation of flow lines has significant effect in increasing the auxiliary line driving speed with average increasing of 6%-24%. [ABSTRACT FROM AUTHOR]

In order to analyze the intersection traffic conditions better and provide data for traffic flow detection and traffic congestion identification, the vehicle queue length of intersection was investigated based on the probability theory.The number of vehicles into/out the intersection and time were used to fit vehicle-time curve. The correction of starting time was established for revising the time from the vehicle driving into the intersection to the vehicle leaving the intersection.The speed-distance model was established to deduce the correction of starting time by analyzing the traffic flow status, and the calculation method of the vehicle queue length was deduced by the differential and integral calculus method.The Hongqi street and Huxi road intersection traffic data in Changchun city were taken as example, and the experiment was carried out to verify the method. The results show that the method can conveniently collect data with simple facility layout, which makes the method easier for large-scale application.The relative errors of E of 14 time points in 16 time points are less than 6% in the queue length, which illuminates that the calculation method is accurate enough for the measurement of vehicle queue length of intersection. [ABSTRACT FROM AUTHOR]