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System to optimize scats adaptive signal system using trajectory data

A trajectory data, traffic control technology, applied in the field of traffic control at intersections, can solve problems such as reducing adaptability

Active Publication Date: 2020-06-23
BEIJING DIDI INFINITY TECH & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

To enhance the stability of traditional detector-based traffic systems, traffic control schemes (such as green segmentation schemes) are usually designed to be very similar to each other, and the conditions for initiating plan changes are usually set conservatively, resulting in fixed green split, which greatly reduces the benefit of fitness

Method used

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  • System to optimize scats adaptive signal system using trajectory data
  • System to optimize scats adaptive signal system using trajectory data
  • System to optimize scats adaptive signal system using trajectory data

Examples

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Embodiment Construction

[0016] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0017] Embodiments of the present application provide systems and methods for adaptively controlling traffic at intersections by using trajectory data to optimize traffic control schemes (eg, green segmentation schemes). Traditional traffic control systems can rely on detectors to provide traffic information to adaptively change the green segmentation scheme. However, it is possible for a detector to malfunction, resulting in missing or erroneous detector data. Trajectory data may provide information that would not be available due to missing or erroneous detector data. Additionally, trajectory data can provide traffic information on side roads or secondary roads that traditional detector networks typically cannot reach....

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Abstract

Embodiments of the disclosure provide systems and methods for optimizing a traffic control plan. The system may include at least one storage device configured to store instructions and at least one processor configured to execute the instructions to perform operations. The operations may include receiving traffic system log data and parsing the traffic system log data to obtain a first set of traffic performance parameters. The operations may also include receiving trajectory data relating to a plurality of vehicle movements and parsing the trajectory data to obtain a second set of traffic performance parameters. The operations may further include determining relationships between vehicle delays and degrees of saturation based on the first and second sets of traffic performance parameters.In addition, the operations may include optimizing the traffic control plan based on the relationships.

Description

technical field [0001] The present application relates to traffic control at intersections, and more particularly, to systems and methods for adaptively optimizing traffic control schemes using vehicle trajectory data. Background technique [0002] Traditional traffic control systems such as the Sydney Coordinated Adaptive Traffic System (SCATS) rely on detectors installed under pavements to provide traffic feedback for adaptive control of green segments. Installing such detectors is usually expensive. Additionally, these detectors often malfunction, resulting in false signals. In some cases even the signal from some detectors does not appear. To enhance the stability of traditional detector-based traffic systems, traffic control schemes (such as green segmentation schemes) are usually designed to be very similar to each other, and the conditions for initiating plan changes are usually set conservatively, resulting in Fixed green segmentation, which greatly reduces the be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/08
CPCG08G1/0112G08G1/0116G08G1/0133G08G1/0145G08G1/08G08G1/012G08G1/081
Inventor 郑剑峰刘向宏李福樑
Owner BEIJING DIDI INFINITY TECH & DEV
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