A Coordinated Optimal Control Method for Signals at Intersections with Secondary Pedestrian Crossings

Abstract

The invention discloses a signal coordination optimization control method for secondary pedestrian crossing intersections. The method obtains the traffic arrival rate of each lane and crosswalk in real time as data input, and performs real-time monitoring and optimization of the efficiency state of the secondary crossing intersection according to real-time requirements. . The specific control optimization steps include: 1) generation of a set of signal schemes for non-conflicting signal phases of pedestrians' secondary crossing, 2) determination of the optimal phase sequence signal scheme for pedestrians' secondary crossing, 3) coordination and optimization of signal scheme parameters to obtain the optimal signal scheme control Parameters send instructions to the signal machine. The invention obtains an optimized signal scheme and real-time on-line monitoring and optimization to ensure the safety of pedestrians' secondary street crossing signal intersections.

Description

technical field [0001] The invention relates to the field of traffic management and control, in particular to a signal coordination and optimization control method for secondary crossings of pedestrians. Background technique [0002] The unique characteristic of my country's traffic flow across the street is mixed traffic flow across the street, including pedestrian slow traffic crossing the street is also a crucial part. The rapid growth of urban motorized travel has further exacerbated traffic problems such as traffic congestion, road traffic safety, traffic energy consumption, and traffic environmental pollution. On the contrary, slow traffic has the advantages of environmental protection and good health, and has become the current mode of transportation. The efficiency of pedestrian crossing often affects the efficiency of the entire traffic flow. The improvement of pedestrian crossing efficiency is necessary for the implementation of the "slow traffic priority" policy. ...

AI Technical Summary

Problems solved by technology

Traditional intersection organization and control methods often weaken or even ignore pedestrian indicators, resulting in large delays for pedestrians to cross the street again, which in turn leads to organizational confusion and random running of red lights, which further interferes with the normal operation of motor vehicles and reduces the operational efficiency of the entire intersection.

The control optimization of the secondary crossing signal at the existing intersection takes the vehicle delay as the optimization goal, and determines the parameters of the green light duration, so it is not possible to fine-tune the optimization of the secondary crossing signal intersection

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