Lane distribution method for single-point signalized intersection

Abstract

The invention relates to a lane distribution method for a single-point signalized intersection. The method comprises the following steps: S1, under a determined traffic demand, considering two kinds of traffic objects, namely motor vehicles and pedestrians, constructing a lane-based binary mixed integer nonlinear programming improved model by taking maximization of intersection traffic capacity asa target, and solving and obtaining an optimal lane allocation and signal timing scheme; and S2, considering the fluctuation of the traffic demand, establishing a two-stage random model based on thetraffic demand according to the lane distribution scheme obtained in the step S1, and solving and obtaining the lane distribution scheme with optimal robustness. Compared with the prior art, the method has the advantages that the lane distribution scheme with the optimal robustness is obtained, different traffic requirements can be met, pedestrian safety is considered, the traffic capacity of theintersection is greatly improved, and traffic jam is effectively relieved.

Description

technical field [0001] The invention relates to the technical field of lane allocation at intersections, in particular to a lane allocation method for single-point signalized intersections. Background technique [0002] With the continuous acceleration of urbanization, the number of cars has increased rapidly, and the problem of traffic congestion has become increasingly serious, which has had a huge impact on people's daily travel and social and economic activities. In the urban road network, the intersection, as the road intersection point, is the center of vehicle gathering and evacuation, and often becomes the bottleneck of the traffic flow operation of the urban road network. Due to the limited space available in cities, it is not feasible to solve the problem of intersection congestion by building new infrastructure. Instead, the best way is to use existing facilities as much as possible. [0003] Common ways to improve the traffic capacity of intersections include: i...

AI Technical Summary

Problems solved by technology

The traditional lane allocation scheme is usually determined according to the average traffic flow of each flow direction at the intersection, ignoring the influence of signal timing on lane allocation

Considering the volatility of traffic demand, a day is usually divided into several time periods, such as morning peak, flat peak and evening peak. Different signal timing schemes are used in different periods, and lane allocation schemes are optimized at the same time. big difference between needs

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