Single-intersection traffic signal optimization control method based on public transport priority

Abstract

The invention discloses a single-intersection traffic signal optimization control method based on public transport priority, and the method comprises the steps: S1, building a single-intersection traffic signal timing optimization model based on the public transport priority, and calculating a target function; S2, initializing the position and speed of each particle in a particle swarm through employing a chaotic strategy, calculating the adaptability value of the particles according to the target function, and setting the overall initial optimal solution of the current particle swarm and the initial optimal solution of the particle individuals; S3, judging whether the position and speed of each particle in a solution space of the target function are convergent or not according to the concentration degree of the particle swarm: outputting the optimal solution in the solution space if the position and speed of each particle in the solution space of the target function are convergent; S4, updating the position and speed of each particle according to an adaptive inertia weight if the position and speed of each particle in the solution space of the target function are not convergent, carrying out the iterative updating of the overall optimal solution of the current particle swarm and the initial optimal solution of the particle individuals, returning to and carrying out step S3 till the position and speed of each particle in the solution space of the target function are convergent, and outputting the optimal solution; S5, carrying out the single-intersection traffic optimization control based on public transport priority according to the priority. The method enables the delay of a bus to be minimized.

Description

technical field [0001] The invention relates to the technical field of intelligent traffic control, and more specifically relates to a traffic signal optimization control method at a single intersection based on bus priority. Background technique [0002] With the continuous advancement of the urbanization process, urban traffic problems have become an important factor that plagues urban development and restricts urban economic construction, and the problem of residents' travel difficulties is becoming more and more prominent. The intersection is the traffic bottleneck of the road, the traffic capacity is small, and the delay during the rush hour operation is often very serious. Prioritizing the development of urban public transportation and using intelligent transportation technology to improve the utilization efficiency of transportation resources and alleviate traffic congestion is an important means of the country's vigorous advocacy and implementation. [0003] The tra...

AI Technical Summary

Problems solved by technology

[0003] The traditional optimal control method of traffic signal at single-handed intersections adopts a fixed signal light timing scheme. The timing scheme of this method cannot make adaptive adjustments to real-time traffic flow information, and the delay of public transport vehicles and social vehicles is relatively large, especially when buses are in traffic. Delays are particularly severe when operating during peak hours

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