Signal-control crossing left turn traffic combination design optimization method

Abstract

The invention relates to a signal-control crossing left turn traffic combination design optimization method. The method includes the steps of 1) acquiring the geometric condition, signal scheme and historical traffic demand of a target crossing, clarifying the service level requirements of the crossing and converting the requirements into the input parameters of a left-turn traffic time-space optimization model; 2) establishing the left-turn traffic time-space optimization model by taking the crossing average traffic delay minimum as the objective function and combining wth the constraint condition; 3) and solving the left-turn traffic time-space optimization model and obtaining the left-turn traffic time-space optimization scheme considering the left-turn waiting area and short lane combination design. The optimization scheme includes left-turn space design parameters and a signal scheme. Compared with the prior art, the method has the advantages of optimizing the left-turn waiting area / short lane capacity, lane function and signal scheme at the same time.

Description

technical field [0001] The invention relates to the field of traffic design and traffic control, in particular to a design optimization method for left-turn traffic combination at a signal-controlled intersection. Background technique [0002] With the continuous advancement of my country's urbanization process, the number of motor vehicles has increased year by year, and the load on urban road systems has become increasingly serious. Problems such as urban traffic congestion, air quality, and frequent accidents have become increasingly prominent. As the basic node of urban road traffic network, level intersections gather traffic flows in different directions. Multiple interweaving traffic flows complete mutual interference behaviors such as diversion, convergence and conflict on the same plane. Due to the limitation of space and time, the intersection has become the bottleneck restricting the full function efficiency of the whole road traffic system. Statistics show that ...

AI Technical Summary

Problems solved by technology

However, since the channel planning scheme of this method is only to determine the function of the left-turn lane, and does not consider the influence of the left-turn waiting area and the length (capacity) of the left-turn short lane on the optimization results, so for setting the left-turn waiting area and left-turn For intersections with short lanes, the existing optimization methods are not applicable, which is also the key problem to be solved in the present invention

Images