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A Sequential Game-Based Signal Timing Method for Single Intersections

A sequential game and signal timing technology, applied in the control of traffic signals and other directions, can solve problems such as insufficient accuracy and inability to reflect local road sections, and achieve the effect of reducing queue length, improving effect, and operating efficiency.

Active Publication Date: 2021-03-30
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The limitation of this method is that it cannot reflect the information of local road sections, so there is a problem of insufficient accuracy

Method used

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  • A Sequential Game-Based Signal Timing Method for Single Intersections
  • A Sequential Game-Based Signal Timing Method for Single Intersections
  • A Sequential Game-Based Signal Timing Method for Single Intersections

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0060] The present invention adopts PTV-VISSIM modeling tool to carry out simulation and test. Specifically, a four-phase single intersection is built in PTV-VISSIM, and the traffic flow in and out of each phase is added to simulate the situation of a real intersection. By adding sensors, the queuing length of each phase at each moment can be obtained, thereby obtaining the benefit function of each phase and the total benefit function.

[0061] Since the sequential game model only involves the comparison between two phases, in this embodiment, phases 1 and 2 are regarded as participant 1 as a whole, and phases 3 and 4 are regarded as participant 2 as a whole when performing four-phase matching in this embodiment. , the two players 1 and 2 play a sequential game, and the allocated time of participant 1 and player 2 is obtained under a given cycle time, that is, the sum of the allocated time of phase 1 and 2 and the sum of the allocated time of phase 3 and 4.

[0062] like Fig...

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Abstract

The invention discloses a single-intersection signal timing method based on sequential gaming, and the method is characterized in that the method comprises the following steps: 1), building an infinite sequential gaming model for representing the timing moment of each phase signal of a single intersection, and determining a revenue function and a discount factor of the model; 2), obtaining a revenue function calculation parameter of each phase of the single intersection in a current period and a queuing length of each phase in a former period through a vehicle-road cooperation system, whereinthe revenue function calculation parameter and the queuing length are used for the gaming calculation of a sequential model; 3), taking each phase of the single intersection as a participant of the infinite sequential gaming model for sequential gaming, and calculating and obtaining the passing time distributed to each phase of the single intersection in a current period according to an obtained sequential gaming equilibrium solution and the duration of a period of the single intersection. The method can be widely used in the field of single intersection signal timing.

Description

technical field [0001] The invention relates to a signal timing technology for a single intersection in a traffic road network, in particular to a signal timing method for a single intersection based on sequential games. Background technique [0002] In the urban traffic system, signal timing at intersections is the basis for solving traffic jams. Through reasonable signal timing, coordination and optimization, the fluency and safety of urban arterial traffic can be effectively improved, and urban traffic pressure can be greatly relieved. However, in practice, many urban intersections only use the simplest timing method, and there is still a lot of room for improvement in efficiency. [0003] Based on this, it is of great economic and theoretical value to study signal timing technology at single intersections. Judging from the current popular methods, they can be roughly divided into the following categories: [0004] 1. Webster timing method. [0005] Webster's timing m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/08
CPCG08G1/08
Inventor 胡坚明裴欣潘旭冉张毅张佐
Owner TSINGHUA UNIV
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