Adaptive traffic control using vehicle trajectory data
First Claim
1. A traffic control system, comprising:
- a communication interface configured to;
receive vehicle trajectory data acquired by sensors and traffic control data from traffic signal controllers;
receive historical trajectory data; and
at least one processor configured to;
detect an abnormal traffic condition;
optimize an online traffic control scheme based on the vehicle trajectory data by adjusting green splits for a plurality of phases;
provide, in real-time, the optimized online traffic control scheme to a traffic signal controller for generating traffic control signals;
optimize an offline traffic control scheme based on the historical trajectory data by adjusting controlling periods in a time-of-day schedule and cycle lengths within each controlling period; and
periodically provide the optimized offline traffic control scheme to the traffic signal controller to replace an existing scheme used by the traffic signal controller.
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Accused Products
Abstract
Embodiments of the disclosure provide traffic control systems and methods. The traffic control system may include a communication interface configured to receive vehicle trajectory data acquired by sensors and traffic control data from traffic signal controllers. The traffic control system may further include at least one processor. The at least one processor may be configured to detect an abnormal traffic condition. The at least one processor may be further configured to optimize an online traffic control scheme based on the vehicle trajectory data by adjusting green splits for a plurality of phases. The at least one processor may be also configured to provide, in real-time, the optimized online traffic control scheme to a traffic signal controller for generating traffic control signals.
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Citations
18 Claims
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1. A traffic control system, comprising:
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a communication interface configured to; receive vehicle trajectory data acquired by sensors and traffic control data from traffic signal controllers; receive historical trajectory data; and at least one processor configured to; detect an abnormal traffic condition; optimize an online traffic control scheme based on the vehicle trajectory data by adjusting green splits for a plurality of phases; provide, in real-time, the optimized online traffic control scheme to a traffic signal controller for generating traffic control signals; optimize an offline traffic control scheme based on the historical trajectory data by adjusting controlling periods in a time-of-day schedule and cycle lengths within each controlling period; and periodically provide the optimized offline traffic control scheme to the traffic signal controller to replace an existing scheme used by the traffic signal controller. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A traffic control method, comprising:
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receiving, by a communication interface, vehicle trajectory data acquired by sensors and traffic control data from traffic signal controllers; receiving, by a communication interface, historical trajectory data; detecting, by at least one processor, an abnormal traffic condition; optimizing, by the at least one processor, an online traffic control scheme based on the vehicle trajectory data by adjusting green splits for a plurality of phases; providing, in real-time, the optimized online traffic control scheme to a traffic signal controller for generating traffic control signals; optimizing, by the at least one processor, an offline traffic control scheme based on the historical trajectory data by adjusting controlling periods in a time-of-day schedule and cycle lengths within each controlling period; and periodically providing, by the at least one processor, the optimized off line traffic control scheme to the traffic signal controller to replace an existing scheme used by the traffic signal controller. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A non-transitory computer-readable medium having instructions stored thereon, wherein the instructions, when executed by at least one processor, cause the at least one processor to perform a traffic control method, the traffic control method comprising:
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receiving vehicle trajectory data acquired by sensors and traffic control data from traffic signal controllers; receiving historical trajectory data; detecting an abnormal traffic condition; optimizing an online traffic control scheme based on the vehicle trajectory data by adjusting green splits for a plurality of phases; providing, in real-time, the optimized online traffic control scheme to a traffic signal controller for generating traffic control signals; optimizing an offline traffic control scheme based on the historical trajectory data by adjusting controlling periods in a time-of-day schedule and cycle lengths within each controlling period; and periodically providing the optimized offline traffic control scheme to the traffic signal controller to replace an existing scheme used by the traffic signal controller.
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Specification