The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 30, 2025
Filed:
May. 03, 2023
Tongji University, Shanghai, CN;
TONGJI UNIVERSITY, Shanghai, CN;
Abstract
A method and system for active control of road network traffic congestion, and in particular, to the technical field of traffic congestion control includes: constructing a directed graph according to the positions of detectors in a road network; determining a free-flow reachability matrix of the directed graph and a plurality of neighborhood matrices with different orders according to a free-flow vehicle speed between cross-sections where the detectors are located and the directed graph; calculating a convolution operator of the directed graph within a set time period; inputting the convolution operator of the directed graph within the set time period into a long short-term memory neural network model to obtain a traffic state of each cross-section at each moment within a predicted time period; and determining whether a control method for each cross-section is single-point control or circle layer control.